Profile of Microbial Stains

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Chapter: Pharmaceutical Microbiology : Identification of Microorganisms

Obviously the microorganisms are extremely too small in size and shape that these cannot be seen with an unaided eye.


PROFILE OF MICROBIAL STAINS

 

Obviously the microorganisms are extremely too small in size and shape that these cannot be seen with an unaided eye. Therefore, it is almost necesary to visualize them (microbes) with the help of a specially and specifically designed device known as microscope.

 

Interestingly, quite a few microorganisms are easily visible more willingly in comparison to oth-ers by virtue of either their larger inherent dimension (size) or more rapidly observable characteristic features. In actual practice, it has been duly observed that there are substantial number of microorgan-isms which need to undergo systematic and methodical several staining techniques whereby their cell walls, membranes, and other relevant structural features critically happen to lose their opacity (opaqueness) or colourless natural status.

 

Metric Units of Length : Both the microorganisms along with their integral component parts do possess very small physical features ; therefore, they are usually measured in units which are evi-dently not-so-common to most of us in daily routine. The microorganisms are measured in the metric units of length (i.e., the ‘Metric System’). Importantly, the standard unit of length in the domain of the ‘metric system’ is the meter (m), which remarkably has the major advantage of having the ‘units’ that are invariably related to one another by factors of 10, such as : 1 m 10 decimeters (dm) 100 centimeters (cm) 1000 millimeters (mm) : as shown below :


 

However, an angstrom (Å)* is equal to 0.0000000001 m (10–10m). Stain usually refers to a pigment or dye used in colouring specifically the microscopic objects (e.g., microorganisms) and tissues.

 

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