I would like to find a web source of photographs of bacterial cultures
grown on petri plates to which an antibiotic has been added.  The
usual way of doing this in the lab is to place round discs of paper
that have been soaked in antibiotic on a cultured plate.  The effect
of the antibiotic shows up as zones of inhibited growth.  This is
being requested to try to develop a lab exercise for a correspondence
course where students will have no access to lab equipment.  The ideal
photographs would show different antibiotics being used with the same
bacteria to show the relative effectiveness.

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Request for Question Clarification by pafalafa-ga on 20 Apr 2004 20:14 PDT

Is this the kind of thing you have n mind:

 helios.bto.ed.ac.uk/bto/ microbes/penicill.htm

If so, how many pictures would make for a good answer for your needs?

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Request for Question Clarification by pafalafa-ga on 20 Apr 2004 20:15 PDT

Ooops...let's try that link again:

http://helios.bto.ed.ac.uk/bto/microbes/penicill.htm

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Clarification of Question by wildbill1-ga on 21 Apr 2004 05:06 PDT

The article you provided is excellent.  Images F and G are what I was
looking for.  The correspondence course I am preparing will be printed
in grey scale.  If you can find one or two more sources that would
have better resolution in grey scale that would be great.

Hello wildbill1-ga,

Thanks for your feedback.  I'm glad the link I provided earlier was
what you are looking for.

Here are a few additional links of interest.  They are mostly
unadorned photographs, but there are one or two that include drawings
and/or annotations that I thought might be useful for your purposes. 
You'll have to give them a test run to see how they look in grey
scale, but I suspect there's enough diversity here that you'll find
what you need.

If you need any additional information, just give me a holler...and
best of luck with your correspondence course.

pafalafa-ga


==========



http://people.ku.edu/~jbrown/antibiotic.html


http://www.nobel.se/medicine/educational/penicillin/readmore.html
[instructive drawing ]


http://www.nerc-oxford.ac.uk/cehoxford/popups/b8.htm


http://web.ukonline.co.uk/webwise/spinneret/microbes/sendsk.htm
[moving your mouse over the picture opens up instructive text]


http://www2.austin.cc.tx.us/microbugz/48antibio.html


http://www2.austin.cc.tx.us/microbugz/48antibio.html


http://agresearch.tamu.edu/BST.htm


==========

Again, just let me know if you need additional information.



search strategy:  Searched Google Images for antibiotic and scanned
the results for petri dish pictures:

http://images.google.com/images?sourceid=navclient&ie=UTF-8&oe=UTF-8&q=antibiotic

You might want to look over the image results yourself, as there's a
ton and a half of additional material here.

The answer provided was exactly what I was looking for.  Thanks for
providing it in less than 24 h.

You're quite welcome.  And thank you for the kind feedback.

pafalafa-ga