Two types of white blood cells called lymphocytes are vital to the specific immune response. Lymphocytes are produced in the bone marrow, and mature into one of several subtypes. The two most common are T cells and B cells. An antigen is a foreign material that triggers a response from T and B cells.
The Benefits of Determination. Determination refers to a person's sense and firmness of purpose. It is a state of mind that keeps people going despite the challenges and obstacles that get in the way. Determination has brought to people success.
by Alex Walsh, MA on Sep 27, 2011. Self-determination theory (SDT) is a theory of motivation that aims to explain individualsâ goal-directed behavior. Motivation resides along a continuum, with intrinsic motivation on the far right, extrinsic motivation in the middle and amotivation on the far left. Intrinsic motivation is ideal; people engage in an activity because of internal factors and are therefore likely to sustain the activity for their own reasons.