Other Uses
Petri dishes are also used for eukaryotic cell culture in liquid medium or using solid agar. Empty Petri dishes may be used to observe plant germination or small animal behavior, or for other day-to-day laboratory practices such as drying fluids in an oven and carrying and storing samples. Their optical transparency and flat profile lend them to their common use as a temporary receptacle for viewing samples (especially liquid ones) under a low power microscope.
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