The biology of cells has always fascinated me, I follow a few flickr groups on the subject and have been very impressed by the work of Tatcher a Hainu
Flower stalk of a dalia by Tatcher a Hainu
I like the way he stains his specimens and and the level of detail in his photography.
However it is Darkfield microscopy that really inspires me due to the high contrast levels and black backgrounds which make it suitable for projection and video mixing.
Here is a superb example of micro-videography, a capture of the algae Volvox…
Volvox aureus, darkfield moves by Jens Hallfeldt
From what I can gather he used a professional microscope, the Olympus CH40, a very nice DSLR, the Canon 5dII and a Zeiss Ultracondenser.