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Gram stain procedure

ØÑíÞÉ ÕÈÛÉ ÌÑÇã (ÕÈÛÉ ÛÑÇã)

This stain for differentiate between G +ve bacteria (which accept staining) and G -ve bacteria (which not accept staining).

Steps:
-Prepare your clear slide and put one drop of normal saline.
-Take specimen from the colony and mix it well with normal saline.
-Leave for dryness on air then fix it on burner.
-Then pour Crystal Violet stain on the slide and leave it for 1 minute.
-Wash gently with water.
-Then pour Iodine stain on the slide and leave it for 1 minute.
-Wash gently w...Read more

White blood corpuscles leucocytes

Number:
- Number of WBC's ranges between 4000 - 11000 corpuscles / mm^2, and in new born the total WBC's are 16000 / mm^2 of the blood.

Shape:
- Spherical.

Size:
- Vary in size and ranges from 5.2 µ.

Color:
- colorless or greyish-white.

Function:
- Phagocytosis of toxin,bacteria and dead cells.
- Production of proteolytic enzymes ( Pepsin & trypsin ).
- Antibody formation.

Types of Leucocytes:
- Granulocytes: Neutrophil , Eosinophi...Read more

Entamoeba Histolytica

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þÇáÃãíÈÇ åí ÚÏæì ØÝíáíÉ ááÃãÚÇÁ ÇáÛáíÙÉ¡ ÊÊÓÈÈ Ýí ÍÏæËåÇ ÇáØÝíáíÇÊ ÇáãÊÍæáÉ (ÇäÊÇãæíÈÇ åÓÊæáæíÊßÇ( Entamoeba Histolytica ) æåæ ØÝíá æÍíÏ ÇáÎáÇíÇ íÊßÇËÑ ÏÇÎá ÇáÇãÚÇÁ æíÊÍæá Çáì ÍæíÕáÉ ÈåÇ äæíÇÊ æÊÓÈÈ ÇáÏíÓæäÊÇÑíÇ ÇáÇãíÈíÉ æåì ãä ÇÎØÑ ÇáØÝíáíÇÊ áÇä ÚáÇÌÉ íÇÎÐ ÝÊÑÉ ØæíáÉ ÝÚäÏ ÊäÇæá ÇáÏæÇÁ ÊÞæã ÇáÇäÊÇãíÈÇ ÈÒíÇÏÉ ÞæÉ ÇáÍæíÕáÉ ÇáãÍÇØÉ ÈåÇ áãÞÇæãÉ ÇáÏæÇÁ áÐáß ÝÇä ÇáÏæÇÁ ÞÏ íÝÔá Ýì ÇáÞÖÇÁ ÚáíåÇ.



þØÑÞ ÇáÇÕÇÈÉ ÈÇáÇãíÈÇ

ãä Çåã ÇáÇÓÈÇÈ:

- Çá...Read more