Natural Science Forum / Biology / Microbiology / March 2005

Has any species survived since the earliest fossil finds,
essentially unchanged?
I thought to post this to sci.biology or similar, but did not find
such an NG.

Where could I find the La and LB medium composition ?
JB Muffat

What is the lifespan of mast cells in tissues?
I mean, don't they get recycled after a few years?
I'm asking because I'd like to know if the IgE bounded
in the Mast cells can ever disappear or are you stuck

I've just completed a fermentation experiment and am writing up the
report. We used LSD plates for cell counts. Can anyone tell me the
visible difference this plate induces between the genera? I had small
pink colonies and I'm hoping that they were Lactobacillus. I've found

Where can I get Serratia Marcescens Culture? I you where I can get this
cheap like 1 oz. please email me at DrEvil1091@aol.com. I need it for a
science fair project and can not find it anywhere.
I am proving that dandelion roots are just as effective as antibiotics

I have recently identified a relatively large human protein (> 15.000 base  
pairs, runs as >300 kD band on an SDS gel) that I want to obtain in  
quantities large enough to be able to study it. I have, however,  
understood that obtaining such a large protein using standard ...

I would like to know of ways to retard facial hair growth for men. I
personally have excessive growth and would very much appreciate any one
pointing me in the right direction. I did try to search for this topic
but found it very difficult to find topics relating to facial hair and

Does anyone have some idea regarding the availability of Nocardia and
Streptomyces microarray/gene chip.
With thanks,
Tanvir

Does anybody know what maximum sizes particles can have in order to be
phagocytized by a protist (with references, if possible)?
I am interested in relevant information about any motile protist, but in
particular about species of the following genera:

I want to concentrate bacteria (eg using a filter) and resuspend them
to measure them with the flow cytometer. To my surprise I have really
not found a single good method to do so. All different resuspension
methods I found in the literature dont give good results and are

Hi, i was wondering if there is any research going on that involves
using bacteriophage type viruses to aid in the curing/removing of
bacterial illnesses in humans...
or if this is impossible could someone please tell me why?

amateur microscopy weiner here.
Our city council has decided to dig up an old burial ground of anthrax
diseased cows & build a sports complex & housing over it.
The cows were buried there in the 40's.

Are there any organisms universally considered "living" (so excludes
viruses) that are simpler than bacteria? I'd appreciate any references
you may have. Thank you.
Khan

Does this group support posting pictures. Ive just finnished 6 months
validation of spiral plating and optical counting and I had the thought to
share some pictures.
Also I would be interested in seeing photos of other peoples work or items

Hello everyone, I would like to know what you guys think about the following
techniques in terms of their efficiency, mechanisms of action, and accuracy
in identifying bacterial species. Also, if you have some references about
these techniques, please send me a copy of the ...