Re: fish pathology

[Rjga at aol_com]

That's wrong, Boat. 

Bacteria are generally sorted by shape (rods, spheres or cocci, curved rods, 
and spirals), then by numbers and arrangement (single, double, more in a 
line, sheets, clusters, etc.), and then by staining characteristics. Basic 
stains are Gram (purple is positive, pink is negative) and Acid-Fast (red is 
positive), but that's just the beginning of a very basic approach. They are 
more importantly classified by physiology, what they use as an energy source, 
what they emit, gases needed and emitted, and a whole lot of other things. 
They are also classed by salinity and temperature tolerance, special chemical 
characteristics, special habitats they use, etc. etc.

Viruses are completely different. You can see some of their crystalline 
arrays
in the cytoplasm or nuclei of some specialized tissues, but many are 
invisible by ordinary (and extraordinary) techniques and can only be 
inferred.

Pick up a basic microbiology textbook at a used book store. You'll really 
enjoy the way it makes sense out of all this.

 


Robert J. Goldstein, Ph.D.
Robert J. Goldstein & Associates, Inc.
Environmental Consultants
8480 Garvey Drive
Raleigh, NC 27616 USA
tel  (919) 872-1174
fax (919) 872-9214
URL   www.rjgaCarolina.com
e-mail  rgoldstein at rjgaCarolina_com


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