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11 years agoWhite blood cells: Description, Classification and Formation
11 years agoBlood Cells and Platelets
11 years agoGram stain of wound specimen
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Staphylococcus epidermidis
-Gram-positive
-nonhemolytic on blood agar.
– nonmotile
-catalase :positive
-coagulase :negative
-facultative anaerobe
-oxidase : negative
– sensitive to novobiocin
– ...
Fertilized egg of Ascaris lumbricoides
Fertilized egg of Ascaris lumbricoides in an unstained wet mount of stool, 200x magnification.
A larva is visible in the egg.
Schistosoma mansoni eggs
Schistosoma mansoni eggs are large (114 to 180 µm long by 45-70 µm wide) and have a characteristic shape, with a prominent lateral spine near the posterior end.
The anterior end ...
Teardrop Cell (dacrocytes)
Microscopic Features:
About the same size as a normal RBC
RBC is Teardrop or pear-shaped
Increased in:
Myelofibrosis
Bone marrow infiltration by hematologic or non-hematologic malignancy
Artifact ...
Staphylococcus aureus
– gram positive cocci
– nonmotile
– Catalase: positive
– Oxidase: negative
– facultative anaerobic
– grape-like clusters under microscope
– ...
Haemophilus influenzae
– GRAM-NEGATIVE RODS
– NON-MOTILE
– NON-SPOREFORMING
– CATALASE: POSITIVE
– OXIDASE : POSITIVE
– FACULTATIVE ANAEROBIC
BASIC TESTS FOR IDENTIFICATION:
requirement ...
Hereditary Spherocytosis
Congenital spherocytic anemia is a disorder of the surface layer (membrane) of red blood cells. It leads to red blood cells that are shaped like spheres, and premature breakdown ...





