The receptors match only one specific antigen. White blood cells called lymphocytes originate in the bone marrow but migrate to parts of the lymphatic system such as the lymph nodes, spleen, and thymus. There are two main types of lymphatic cells, T cells and B cells.nce activated, helper T cells start to divide and to produce proteins that activate B and T cells as well as other immune cells. The killer T cell is specialized in attacking cells of the body infected by viruses and sometimes also by bacteria. It can also attack cancer cells.
Use tubercular in a sentence. 1  of, like, or having a tubercle or tubercles. 2  of, relating to, or having tuberculosis. 3  caused by the tubercle bacillus.
Ventricular tachycardia. Ventricular tachycardia in a German Shepherd. Ventricular tachycardia (ventricular arrhythmia) is a heart disease of dogs characterized by a series of ventricular premature complexes (VPC) usually greater than 100 beats per minute. In this condition, the RR interval on the ECG is usually regular, but nonconducted sinus P waves may be superimposed on or between the ventricular complexes.