Organisms, Nutrients and Digestion - Staining cells | en - 265 - 25205
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Module 1: Organisms, Nutrients and Digestion

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Biology - Introduction

Introduction

This is kidney cell unstained

This kidney cell has been stained with methyl-red.

Let's have a look at cell basics: staining cells, sectioning, surface area
to volume ratio, structures and functions and multicellular organisms.

Many of the structures in cells are difficult to see because they are
transparent or they blend into the background. To make these structures
easier to see with a light microscope scientists often add a liquid stain
to the specimen.

Compare the pictures on this page - one of the cells is stained, the other
is not.

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