Science Communication: Why its so important!

























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  Basic Bacterial Morphology  Bacteria and fungus (mold and yeast) grow in a variety of shapes, sizes and colors.  Although it is difficult to make a definite identification of cultures growing in broth or solid media many have distinguishing characteristics that give us clues to identification.  Many Microbiologist can make a tentative identifications by growth characteristics but definitive id requires further testing (ie Gram stain, chemical testing, etc). The palm of a hand print print done on TSA agar.  There is a mix of different textured and colored colonies on the plate some bacterial some yeast.  By looking at color, texture, growth times and various growth temperatures you can get an idea as to what is on the plate.  Ex:  the orange colonies are yeast and tend to grow better at room temperature or refrigerated temperatures where the large colony on the left ( Bacillus spp) and the white colonies ( Staphylococcus ) grows wel...
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Oxygen Requirements:  Fluid  Thioglycolate Media A                             B                                C                                      D                                E    Organisms grown in Fluid Thioglycollate Media, a reducing media that uses sodium thioglycolate to chemically combine with dissolved oxygen to deplete the oxygen in the media. The top portion of the tube contains oxygen while the bottom of the tube is lacking molecular oxygen.  All organism except for  Neisseria sicca  were grown for 48 hour...
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Unwashed and Washed Hand Prints With the emergence of antibiotic resistance bacteria and discoveries of new and emerging viral diseases the importance of hand washing has become increasingly more important in disease prevention.   Bacterial handprints done durning the summer in a Stem Class.  The unwashed hands, washed with soap and water, showed environmental contamination of both bacterial and yeast.  Hand prints were done using large TSA Kirby Bauer plates.  Plates were incubated at 37 degree's C for 24 hrs then 48 hrs at room temperature and finally held at refrigerated temperatures for a week or longer. Unwashed bacterial hand print showing large colonies of Bacillus mycodies (large rhizoid colony on the left) and other Bacillus spp as well as numerous environmental yeast (yellow) and normal body flora (white circular colonies, Staph spp ).  Seeing Bacillus mycodies in the warmer months is unusual and normally seen in the cooler months. ...
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