virus attack on a t lymphocyte. hiv, infection and immunodeficienc

abstract aids and attack background bacteria bacterial bacterium biochemistry biology blood cancer cell cells concept contagion disease epidemic epidemiology flu germs health healthcare hiv human illness illustration immune immunity immunodeficienc immunodeficiency infected infection infectious lymphocyte macro medical medicine microbe microbiology microorganism microscopic organism outbreak pathogen red render research retrovirus science sickness system viral virus