Answer:
1) cortical epithelial cells; (2) macrophages and dendritic cells
Explanation:
T cells, also known as T lymphocytes, are a fundamental type of cell of the immune system that determines the specificity of the immune response to specific foreign particles (antigens). T cells are produced in the Thymus (it is for that reason that they are called T cells) and then circulate throughout the bloodstream in order to recognize specific antigens in association with major histocompatibility complex (MHC) molecules on the surface of antigen-presenting cells (APC), such as macrophages and dendritic cells. T cells undergo positive and negative selection: 1- positive T-cell selection refers to the process by which T cells bind cortical epithelial cells that express Class I or Class II MHC molecules with enough affinity to get a survival signal; whereas negative selection occurs when T cells bind to macrophages and dendritic cells that express MHC specific receptors with a strong enough affinity to get an apoptosis (programmed cell death) signal.
Supporting a particular cause or action
I will need the picture or information to answer this.
Answer:
Alcohol Damages the Developing Brain
Explanation:
Alcohol adversely affects a teenager's brain more than an adult brain because the adolescent brain is still developing. Alcohol can damage every brain, but for teenagers, the damage is more severe and can occur with smaller amounts of alcohol than with adults.
Answer:
Recognition of Decision Requirement
Explanation:
Recognition of decision requirement is a decision requirement are usually based on an opportunity or a problem. Manager, after scanning the environment on a regular basis, tend to recognize and identify the likely internal and external factors requiring decision action. Shirley is investigating further to identify factors that may likely be making her see an increase in drinking problems among the workforce.
