Which of the following is true?
If the statement is false, underline the misplaced word or words in each statement.
In the fever process, interleukin 1 is secreted by macrophages, stimulates the anterior hypothalamus to secrete PTH which resets the body thermostat higher.
In the adaptive Immune Response, the immune system's first exposure to a pathogen is called a primary adaptive response. Upon re-exposure to the same pathogen, a secondary adaptive immune response is generated, which is stronger and faster than the primary response.
The secondary adaptive response cannot eliminate a pathogen before it can cause significant tissue damage or any symptoms.
Without symptoms, there is no disease, and the individual is not even aware of the infection. This secondary response is the basis of immunological memory, which protects us from getting diseases repeatedly from the same pathogen.
A third important feature of the adaptive immune response is its ability to distinguish between self-antigens, those that are normally present in the body, and foreign antigens, those that might be on a potential pathogen.
An antigenic determinant (epitope) is one of the small regions within an antigen to which a receptor can bind, and antigenic determinants are limited by the size of the receptor itself.
Antigen processing is a mechanism that enzymatically cleaves the antigen into smaller pieces. The antigen fragments are then brought to the cell's surface and associated with a specialized type of antigen-presenting protein known as a major histocompatibility complex (MHC) molecule.
During T Cell Development and Differentiation, T cells undergo positive and negative selection in the thymic cortex and medulla, respectively.