Q.

In TEM, the tissue is stained by floating on drops of                                               

A. hydrocarbons
B. slow-molecular weight stains
C. heavy metal soutions
D. oil immersion
Answer» C. heavy metal soutions
Explanation: the tissue is stained by floating on drops of uranyl acetate and lead citrate (heavy metal solutions). these solutions when bound to the specimen, provide the density required to scatter the electron beam.
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