Question

Why do some regions appear darker than regions on staining the cell with methylene
blue? Name the other solutions that can be used for staining.

Answer 1

Answer:

staining is basicially a dye which use to color the blood component .nucleous appear darker because of the acidic nature of the nucleaous which commonly stained by basic dye .example ..methylene blue dye

and acidic dye(eosin dye) which give color to basic component i.e. cytoplasm

Explanation:

Answer 2

methylene blue is a common lab stain and is used for many different types of cells .methylene blue is an oxidizing chemical with a lot of biological activity,it does a very good job of staining DNA and RNA, methylene blue will produce a darker stain in areas where those are present.