Nicaragua is a country in Central America. It has coastlines on both the Caribbean Sea, in the east, and the North Pacific Ocean, in the west, and has Costa Rica to the southeast and Honduras to the northwest.
The immune response to a pure polysaccharide vaccine is typically T-cell independent, which means that these vaccines are able to stimulate B cells without the assistance of T-helper cells.nother way to produce active immunity is by vaccination. Vaccines interact with the immune system and often. produce an immune response similar to that produced by. the natural infection, but they do not subject the recipient to. the disease and its potential complications.
Another way to produce active immunity is by vaccination. Vaccines interact with the immune system and often produce an immune response similar to that produced by the natural infection, but do not subject the recipient to the disease and its potential complications. Helper T-cells (CD4+) are middlemen in the immune response. 2  When they get activated, they proliferate and secrete cytokines that regulate or help effector lymphocyte function. 3  They are known as one of the targets of HIV infection, and the decrease of CD4+ T-cells results in AIDS.