Ключевые слова: bacillus, background, bacteria, bacterium, biological, biology, care, cells, closeup, condom, diagnosis, disease, epidemic, hand, health, hospital, human, illness, infection, infectious, laboratory, macro, male, medical, medicine, micro, microbe, microscope, pallidum, pathogen, pathology, research, science, scientific, sickness, syphilis, therapy, treponema, virus,