Tungsten is a Reagent Used in The

Question

Tungsten is a reagent used in the
A) acid-fast stain.
B) electron microscopy stain.
C) endospore stain.
D) flagellar stain.
E) negative stain.

Accepted Answer

Tungsten is used in electron microscopy stains as it provides good contrast and high resolution of the specimen being observed. It is frequently used as a component of heavy metal stains such as uranyl acetate and lead citrate, which are commonly used in electron microscopy.