Streptomycin Is First Isolated (1943) After coining the word "antibiotic" for bacteria-killing chemicals derived from micro-organisms, American microbiologist Selman A. Waksman, working with Albert Schatz, isolated streptomycin—the fourth antibiotic ever discovered. Waksman won the 1952 Nobel Prize in Physiology or Medicine for the discovery. Streptomycin acts by inhibiting protein synthesis and damaging cell membranes. Produced by soil bacteria, it was the first specific agent effective in the treatment of what disease? Discuss More...
'Smilies' are small graphical images that can be used to convey an emotion or feeling.
If you have used email or internet chat, you are likely familiar with the smilie concept.
Certain standard strings are automatically converted into smilies.
Try twisting your head on one side if you do not 'get' smilies;
using a bit of imagination should reveal a face of some description.
If you want to disable smilies in a post that you make, you can select the 'Disable Smilies' option
when posting. This is particularly useful if you are posting program code and you do not
want ;) converted to a smilie face!