Answer:
d. an immediate increase in the concentration of antibodies, followed by a slow decline.
Explanation:
The Primary Immune Response is mediated by antibodies, which are gamma globulin proteins formed by plasma cells (B lymphocytes). Plasmocyte is a differentiated B lymphocyte capable of actively secreting antibodies.
Antibodies are produced with the main function of neutralizing and eliminating an antigen that stimulated their production. This elimination process is done in various ways through complement fixation, opsionization, anaphylactic reaction (mast cell degranulation), substance neutralization, agglutination, etc.
To neutralize the antigen, the primary immune response promotes an immediate increase in antibody concentration. This is usually a quick process. This concentration usually begins to decline in a slow process, but it will vary depending on the antigen.
ANSWER: C biosphere
Explanation: because biosphere is all animals together BRAINLSIT?
Answer:
they can naturally interbreed to produce a fertile offspring
Our Milky Way galaxy is classified as a barred spiral galaxy. A barred spiral galaxy differs from a regular spiral galaxy because it has a <span>central bar-shaped structure composed of stars. </span>