Question

why we need to use dilute hydrochloric in animal tissue observation ​

Answer 1

Explanation:

The most basic reason that cells are stained using elements like iodine is to enhance visualization of the cell or certain cellular components under a microscope. Cells may also be stained to highlight metabolic processes or to differentiate between live and dead cells in a sample.Once the cells have been stained, subsequent treatment with a dilute hydrochloric acid solution or ethyl alcohol containing 3% HCl (acid-alcohol) will not decolorize them. Such cells are thus termed acid-fast in that the cell will hold the stain fast in the presence of the acidic decolorizing agent.

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