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Penicillium (from Latin penicillus: paintbrush) is a genus of ascomycetous fungi of major importance in the natural environment as well as food and drug production. It produces penicillin, a molecule that is used as an antibiotic, which kills or stops the growth of certain kinds of bacteria inside the body.

House fly

The common house fly is a stunning sight up close, revealing a veritable world of structure that is unseen by human eye. This tiling of a complete house fly (underside) shows the legs, abdomen, head, and mouth parts clearly.