..haha..
an axioscope is just a very expensive, powerful type of microscope made by Zeiss
i do microinjections of zebrafish embryos, so i have to look at these little balls in the scope and apply a precision injector to them (small ass glass capillary tubes function as the needle part) when i get the needle inside them, i hit a footpedal that is connected to a nitrogen tank.
a little burst of nitrogen hits the injector needle and a burst of liquid comes out.
(one nanoliter of liquid, which is one one millionth of a liter)
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And then what do you do with that liquid?