Medical and health topics fully illustrated with pictures and videos for easy understanding.
Microbiology Gallery
Download illustrations of most common bacteria and viruses that infect human and diseases caused by them, diagrams of Gram positive and negative bacterial cell wall, HIV infection and replication, bacteriophage structure, and more.
Please note: Free downloads are intended to facilitate healthcare education for people in need in low income countries and can be used for educational purposes only. If you can afford it or if you plan to use the images for commercial purposes, please consider buying instead. You can find a larger image collection at higher resolutions for sale at affordable prices on Alila Medical Media website.
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Mechanism of allergy (drug,hay fever, asthma...)
Anaphylactic reaction mechanism: antigen bridges the gap between two antibody molecules on mast cell or basophil, triggering massive release of histamine and other mediators.
Herpes simplex virus infection, labeled diagram.
Herpes simplex virus (HSV-1) latent (in trigeminal nerve ganglion) and active infection (cold sores), labeled drawing.
Bacteria morphology, medical drawing.
Diagrams of common bacteria infecting human including staphylococcus aureus, streptococcus pyogenes, bacillus cereus, e coli (escherichia coli), klebsiella pneumoniae, bordetella pertussis, corynebacterium diphtheriae, helicobacter pylori, clostridium botulinum and tetani, neisseria gonorrhoeae, spirochete, treponema pallidum, and more.