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The shape of a bacterium is determined by its rigid cell wall. Bacteria that lack a cell wall (Mycoplasma and L-forms) display a great diversity of unusual shapes. Bacteria having various shapes are...
Taenia saginata (Beef tapeworm): CDC Microorganisms are those living creatures that can not be viewed by the unaided eye, i.e., you need a microscope to view them. But some microorganisms can be...
There are more opportunities available for microbiologists today than at any time in the history of the field. Although the microbiological advancements of the last two centuries have been...
E. coli: Only bacterium that wins records number of Nobel Prizes
Escherichia coli is the best known prokaryotic organism, we know more about E. coli than humans. It was first isolated in 1885 by the German bacteriologist Theodor Escherich, as normal flora of the...
Influenza virus has two ways to change — one slow and one fast. The slow change is called “drift” — the virus gradually accumulates individual mutations until its surface...
After an epidemic, shouldn't everyone be immune to the virus? Why is influenza able to come back again and again? The answer lies in the virus’s genetic structure and high mutation rate....