Biological pigment

Introduction Mammalian Skin: The Basics The first line of defence between the outside world and inside an animal is the skin. It is an effective barrier against physical, chemical and pathogenic assault (1). However, the skin is not only a barrier but a sensory organ enabling animals to sense the surrounding environment, provoking appropriate responses for animal survival. There are two main types of skin; thin skin (hairy), which makes up nearly all the skin on the body, and glabrous skin…

INTRODUCTION Cancer can be defined as a special kind of illness that occurs when the cells in a given part of a body begin to grow out of proportion than is normal. Currently, in the United States, this disease is the second leading cause of deaths. Human beings over the history have had tumors and remedies have been implemented, and others continue to be performed and studied over time (American Cancer Society, 2010). These methods of treatment include chemo-preventive methods and of late…