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11 Cards in this Set

  • Front
  • Back

Staphylococcus aureus, Streptococcus pneumoniae, Listeria monocytogenes

GRAM-POSITIVE Bacteria

E. coli, Salmonella enterica, Pseudomonas aeruginosa

GRAM-NEGATIVE BACTERIA

Myobacterium spp., Mycoplasma pneumoniae, and Nocardia spp.

Neither gram-positive or negative.



Tested with ACID-FAST stain because they have MYCOLIC ACID (waxy lipid), and lack cell walls and peptidoglycan.

Key Bacterial Antigen Recognition: TLR 5, TLR 2, TLR 9, TLR 4, TLR 6

TLR 5: Flagellin



TLR 2: Peptiglycan



TLR 9: bacterial DNA



TLR 4: Lipopolysaccharide in Gram-Negative



TLR 6: Along with TLR 2, recognize Gram-Positive Teichoid/Lipoteichoic Acids

Key Viral Antigen Recognition: TLR 3, TLR 7, TLR 8, TLR 9

TLR 3 - dsRNA



TLR 7, 8 - ssRNA



TLR 9 - unmethylated CpG nucleotides, same as bacteria.

Key Fungal Antigen Recognition: TLR 2, 4, 6

All recognize fungal chitin, mannans, and beta glucan/glycans

Candida Albicans

Most important opportunistic fungi.



Form white, creamy colonies. Exists naturally in body until immunocompromised.



Causes yeast infections of mouth and vagine, rashes, erythemous skin.

Giardia duodenalis and Beaver Fever

Protozoan parasite, flagellated.



Beavers are hosts. Reside in host intestine before producing infectious cysts in the intestine, which is excreted along with feces into water sources.



Ingestion period is 1-4 weeks, causes diarrhea/flatulence/lipid in stool.

Taenia solium

Helminth parasite tapeworm.



Humans serve as intermediate hosts with larva. Larval infection of human causes Cysticercosis, making cysts in muscle/brain/lungs, can cause acquired epilepsy.



Larvae death in human releases antigenic material that causes inflammation.

Enterobius vermicularis, Ascaris lumbricoides

Helminths, nematode unsegmented roundworms.

Fasciola hepatica, Schistosoma

Helminth trematode flukes. Flat, fleshy.