|Sizes||Giantmicrobes are based on actual microbes, cells, organisms and other critters, only 1,000,000 times actual size!
Gigantic (GG) 40-60cm
XL (XL) 25-38cm
Original (PD) 12-20cm
Minis (MM) 5-10cm each
Keychain (KC) 5-10cm with clip
|Materials||Plush from all new materials. Stuffed with polyester fiber fill. Surface washable: sponge with water & soap, air dry.|
|Confezione||Each plush microbe includes a printed card with fun, educational and fascinating facts about the actual microbe or cell.|
|Safety||Every product meets or exceeds U.S. and European standards for safety. For ages 3 and up.|
All about Penicillin (Penicillium chrysogenum) XL Size
FACTS: Technically, all that penicillin does is to inhibit the enzyme transpeptidase in gram-positive bacteria preventing the crosslinking of the peptidoglycan polymers and impairing the generation of cellular walls. But that is enough to change the world!
It is commonly known that Scottish scientist Alexander Fleming discovered the antibacterial effects of Penicillium (from the Latin for paintbrush, Penicillium the mold produces penicillin the antibiotic agent) in 1928. He returned to his lab after a long-weekend and noticed that the growth of Staphylococcus aureus bacteria in a petri dish he had forgotten to clean was constrained.
What is less well known is that Penicillium’s special aptitudes had been noticed by a French medical student named Ernest Duchesne in the late 1890’s – and indeed, that the properties of molds had attracted the attentions of a number of scientists in the proceeding decades. In fact, the ancient Egyptians and Chinese rubbed moldy breads and soybean curbs on skin infections thousands of years ago!
Fleming was never able to isolate the penicillin agent, and it was not until World War II, when the hope of treating injured soldiers spurred antibiotic research, that Howard Florey and Ernst Chain managed to do so. However, not all strains of Penicillium produce penicillin equally well (or at all). Commercial production of the miracle drug was limited until an exceptionally productive strain of Penicillium was discovered on a moldy cantaloupe melon from a market in Peoria, Illinois.