During infection with a microbial pathogen, which of the following would most likely be responsible for phagocytosis of organisms and the release of histamine, respectively?A.Basophils, macrophagesB.Natural killer cells, T cellsC.Macrophages, basophilsD.T cells, natural killer cells

The answer is C. Macrophages, basophils.

Here's the step-by-step explanation:

1. Phagocytosis is a process where cells engulf some solid particles to form an internal compartment known as the phagosome. This process is primarily carried out by specialized cells known as phagocytes, which include macrophages. So, macrophages are responsible for the phagocytosis of organisms during an infection.

2. Histamine is an organic nitrogenous compound involved in local immune responses. It regulates physiological function in the gut and acts as a neurotransmitter for the brain, spinal cord, and uterus. Histamine is released from granules in the cells known as mast cells when the immune system is triggered, and also from basophils. Therefore, basophils are responsible for the release of histamine.

So, during infection with a microbial pathogen, macrophages would most likely be responsible for phagocytosis of organisms and basophils for the release of histamine.