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102 Cards in this Set
- Front
- Back
blood is composed of all except
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interstitial fluid
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the formed elements of the blood include
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blood cells
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the combination of plasma and formed elements is called
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whole blood
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when checking the efficiency of gas exchange it may be necessary to draw blood sample from?
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an artery
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the total volume of blood in the body of a 20kg man is approximately_____liters
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5-6 liters
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the most abundant proteins in blood plasma are
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albumin
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plasma proteins that are necessary for blood clotting are
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fibrinogens
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RBC production is regulated by the hormone
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erithropoenin
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which of the following statements are concerning RBC is false
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do not have a larke
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adult normal hct would be
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45%
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a person with type A blood has
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B antigen on the RBC
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the cups of AV valve are attached to papillary
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chordae tendenea
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the T wave on aa EkG tracing represents
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ventricular re-polarization
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contraction of the papillary muscle
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present the AV valve from increasing into the atria
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the visceral pericardium is the same as the
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epicardium
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the biscuspid valve is located
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between Left atrium and R Ventricle
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the left ventricle pumps blood to the
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systemic system
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the AV valve on the side of the heart that receives the superior vena cava is the
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tricuspid
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blood learning the right ventricle enters the
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pulmonary trunk
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air entering the body is filtering, warming and humidified by the
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upper respiratory track
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the entrance to the ascending aorta is guarded by the
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semilunar valve
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the common passeway shared by the respiratory and digestive system is the
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pharynx
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the airway between the larynx and the primary bronchi is the
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thrachea
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the actual sites of gas exchange within the lungs are
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alveoli
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when the diaphragm and external intercostal muscle contract
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the V of thorax increases
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the RA receives blood from the
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inferior vena cava
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the partial pressure of Oxygen in arterial blood is approximately
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100 mmHg
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the process by which dissolved gases are exchange between the blood and tissue is
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internal respiration
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boyles law, if the volume of gas increases
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the pressure of the gas will decrease
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the function of an atrium is to
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collect blood
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compare to the RV the LV has all following characteristics EXCEPT that it
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relaxes the same way
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the L and R Pulmonary Vein carry blood to the
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Heart
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the heart is composed of____layers
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4
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blood components
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plasma, WBC, RBC
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blood cells originate in red bone marrow from
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hematopoetic
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a protein called thrombopoietin stimulates large cells called
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megakaryocytes
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myeloid and lymphoid stems cells, respond to different secreted growth factors, called
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hematopoietic growth factors
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the lack of nuclei in the red blood cells cannot
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synthesize messenger RNA
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in the red bone marrow, hematopoietic stem cells divide and give rise to
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erythroblasts
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a negative feed back mechanism using the hormone
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erytheopoietin
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erythropoietin
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controls the rate of red blood cell formation
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the drop of the atmospheric pressure decreases releases the
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EPO
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The average life span of a red blood cell is
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120 days
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The number of red blood cells in a male is
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4,600,000–6,200,000
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Red blood cell formation (erythropoiesis) initially occurs
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in the yolk sac, liver, and spleen
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When iron stores are low,
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absorption rate increases, and when the tissues are becoming saturated with iron, the rate greatly decreases.
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Low blood oxygen causes the
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kidneys and liver to release erythropoietin
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A deficiency of red blood cells or a reduction in the amount of hemoglobin they contain results in a condition called
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anemia
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White blood cells, or leukocytes
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protect against
disease |
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Neutrophils
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have fine cytoplasmic granules
that appear light purple with a combination of acid and base stains |
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Neutrophils
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account for 54% to 62% of the leukocytes in a typical blood
sample from an adult |
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These cells
phagocytize bacteria, fungi, and some viruses |
Neutrophils
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Eosinophils
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contain coarse, uniformly
sized cytoplasmic granules that stain deep red in acid stain |
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moderate allergic reactions and
defend against parasitic worm infestation |
Eosinophils
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These cells make
up 1% to 3% of the total number of circulating leukocytes |
Eosinophils
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Basophils
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are similar to eosinophils in size
and in the shape of their nuclei |
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they release histamine, which promotes infl ammation, and heparin, which inhibits blood clotting, thus increasing blood flow to injured tissues
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Basophils
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Monocytes
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are the largest blood cells, two
to three times greater in diameter than red blood cells |
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leave the bloodstream and become macrophages
that phagocytize bacteria, dead cells, and other debris in the tissues |
Monocytes
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They usually make up 3% to 9% of the leukocytes in
a blood sample and live for several weeks or even months |
Monocytes
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Lymphocytes
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are usually only slightly
larger than erythrocytes |
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The major types of lymphocytes are T cells and
B cells, both important in |
immunity.
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T cells
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directly attack
microorganisms, tumor cells, and transplanted cells |
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B cells
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produce antibodies
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White blood cells
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protect against infection in various ways
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Leukocytes can squeeze between the cells
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This movement, called
diapedesis |
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The most mobile and active phagocytic leukocytes are
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neutrophils and monocytes
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The swelling that
this inflammatory reaction produces delays the spread of invading microorganisms into other regions |
This phenomenon is called positive
chemotaxis |
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A total
number of white blood cells exceeding 10,000 per microliter |
leukocytosis
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Platelets
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also called thrombocytes
|
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Megakaryocytes, and therefore platelets, develop from
hematopoietic stem cells |
in response to the hormone
thrombopoietin |
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Platelets help repair
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damaged blood vessels by sticking
to broken surfaces |
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They release serotonin
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which contracts
smooth muscles in the vessel walls, reducing blood flow. |
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Red blood cell (erythrocyte
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Transports oxygen and carbon dioxide
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White blood cell (leukocyte)
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Destroys pathogenic microorganisms
and parasites and removes worn cells |
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Neutrophil
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Phagocytizes small particles
|
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Eosinophil
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Kills parasites and moderates allergic
reactions |
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Basophil
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Releases heparin and histamine
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Monocyte
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Phagocytizes large particles
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Lymphocyte
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Provides immunity
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Platelet (thrombocyte)
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Helps control blood loss from broken
vessels |
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plasma proteins
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are the most abundant dissolved
substances (solutes) in plasma |
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Albumins
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are the smallest of the plasma
proteins, yet account for 60% of these proteins by weight |
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albumins are an important
|
determinant of the
osmotic pressure of the plasma |
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If the concentration of plasma proteins falls, tissues swell, a condition
|
called edema.
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Globulins
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which make up about 36% of
the plasma proteins, can be further subdivided into alpha, beta, and gamma globulins |
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Fibrinogen
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which constitutes about 4% of
the plasma proteins, plays a primary role in blood coagulation |
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The most important blood gases are
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oxygen and carbon dioxide
|
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The plasma nutrients
|
include amino acids, simple sugars,
nucleotides, and lipids absorbed from the digestive tract |
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Molecules that contain nitrogen atoms but are not proteins
comprise a group called |
nonprotein nitrogenous substances
|
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a rise in the blood urea
nitrogen (BUN) |
may suggest a kidney disorder
|
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Coagulation
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the most effective hemostatic
mechanism, forms a blood clot in a series of reactions |
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Hemostasis
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refers to the stoppage of bleeding,
which is vitally important when blood vessels are damaged |
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Cutting or breaking a smaller blood vessel stimulates the
smooth muscles |
called vasospasm
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A blood clot abnormally forming in a vessel is a
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thrombus
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clot that dislodges, or a fragment of a clot
that breaks loose and is carried away by the blood fl ow, is called an |
embolus
|
|
embolism.
|
emboli continue
to move until they reach narrow places in vessels where they may lodge and block blood fl ow, causing an |
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atherosclerosis
|
accumulations
of fatty deposits change arterial linings, sometimes initiating inappropriate clotting |
|
whenever antigen A is absent in the red blood cells,
an antibody |
called anti-A is produced
|
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anti-B
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whenever antigen
B is absent, an antibody called |
|
persons with type A blood also have
|
anti-B antibody
in their plasma |
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those with type B blood have
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anti-A
antibody |