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Hematopoiesis is the ________.

The region of each antibody molecule where amino acid composition is highly different from one clone of B lymphocytes to another is the ________.

Which of the following is not a component of the first line of defense?

Acquired specific immunity involves the response of ________.

The granules of basophils and mast cells contain ________.

Hematopoiesis is the ________.

A 35-year-old male presents to the ER with a laceration on his left hand. The patient reports an hour ago he was working on renovations in his 1945 home, when an old board fell and injured his hand. The laceration is approximately 3 inches long and moderately deep. It appears that the cut was bleeding heavily, but he has stopped the bleeding by holding pressure on the site with an old t-shirt.   Which line(s) of defense has been breached for this injury?   

An antihistamine will ________.

Fluorescent dye can be used as a label to trace antibody-antigen reactions in an ELISA assay.

MRI, CT and PET scans are useful diagnostic tools in cases where infection is located in deep tissues, thereby saving the patient from an invasive biopsy.