By using the stain methylene blue,the . . . . . . can be differentiated from other corpuscles.

The buffer salts present in the blood are

Which of the following cells act as phagocytes?
$I$ - Neutrophils,$II$ - Monocytes
$III$ - Lymphocytes,$IV$ - Eosinophils,$V$ - Basophils

Which of the following statements are correct?

$A$. Basophils are most abundant cells of the total WBCs

$B$. Basophils secrete histamine, serotonin and heparin

$C$. Basophils are involved in inflammatory response

$D$. Basophils have kidney shaped nudeus

$E$. Basophils are agranulocytes

Choose the correct answer from the options given below:

Blood = $.....$

Which one of the following white blood cells occurs in the greatest proportion in human blood?