doctor holds book of hiv / aids sarcoma kaposi in a hospital

aids background biology capsid cell chickenpox chronic closeup colorful cytomegalovirus disease dna eczema electron epidemic genital germs glycoprotein health herpes hhv hiv human illness illustration immunity infection infectious influenza kaposi macro medical medicine microbiology microscopy organism prevention render respiratory sarcoma science simplex sore std stethoscope sti structure syndrome virus