leukocytosis

Virulence factors of Bordetella pertussis

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Bordetella pertussis is a small non-motile, non-sporing ovoid. Gram negative cocco-bacillus. It measures about 1-1.5µm x 0.3µm and is haemolytic. Capsulated (fresh isolates from patients), strict aerobes and fastidious. On staining with toludine blue, metachromatic granules are seen. The genes coding for B. pertussis virulence factors are under the control of two sets of genes, which … Read more

Differences between RBC and WBC

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 S.N RBC WBC 1. RBC stands for red blood cells. WBC stands for white blood cells. 2. They are also known as erythrocytes. They are also known as leucocytes. 3. They are small biconcave and non nucleated. They are comparatively larger, amoeboid and nucleated 4. Much more in number. Much less in number. 5. Around … Read more