Title: Sleeping sickness and Chagas’s disease are caused by members of the genus Trypan Post by: barry on Feb 23, 2014 Sleeping sickness and Chagas’s disease are caused by members of the genus Trypanosoma, protozoans that reside in the bloodstream. What is the principle way trypanosomes evade the immune response?
A. Antagonistic cytokines are produce by the trypanosome. B. Periodic changes in the surface antigen (VSG) of trypanosomes ensures that at least some cells will survive antibody mediate attacks. C. Trypanosomes are human pathogens and thus immune to human immune responses. D. Trypanosomes invade the brain and red blood cells so that immune effector cells such as macrophages and dendritic cells cannot phagocytize trypanosomes. E. Vaccines are readily available to people in trypanosome infested areas. Title: Re: Sleeping sickness and Chagas’s disease are caused by members of the genus Trypan Post by: padre on Feb 24, 2014 Content hidden
Title: Re: Sleeping sickness and Chagas’s disease are caused by members of the genus Trypan Post by: barry on Feb 26, 2014 Thanks.
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