Trypanosomiasis refers to a group of diseases caused by Trypanosoma There are two types of trypanosomiasis that affect humans, they are divided according to their geographical location: African trypanosomiasis, or sleeping sickness, is caused by Trypanosoma brucei parasites in sub-Saharan Africa and is transmitted by the tsetse fly? (Glossina).
Specilized cells in the epidermis called melanocytes produce melanin, a dark pigment that provides skin color. Melanin absorbs ultraviolet radiation in sunlight and preventing mutations in the DNA of skin cells and other damaging effects.ifferences in skin color result from differences in the amount of melanin that melanocytes produce and the distribution and size of pigment granules. Skin color is genetically determined.
Abstractâ In addition to the keratinocytes, the epidermis contains resident cells of dendritic morphology. These are principally the Langerhans cell, Merkel cell and melanocyte.These cells have a number of different functions in the integument.Resident dendsuitic cells in the epidermis: Langerhans cells, Merkel cells and Melanocytes (Celulas cÃ©lulas residentes rÃ©sidentes en: la epidermis Celulas, cÃ©lulas de Langerhans celulas cÃ©lulas). Deâ Merkel y melanocitos abstract in, addition to the keratinocytes the epidermis contains resident. cells of dendritic morphology