The immune system and the nervous system maintain extensive communication, including 'hardwiring' of sympathetic and parasympathetic nerves to lymphoid organs. Neurotransmitters such as acetylcholine, norepinephrine, vasoactive intestinal peptide, substance P and histamine modulate immune activity.
The answer is A because it is not formed from decaying marine animals.
The answer is Urine specific gravity less than 1.025. Because
the exact gravity is less than 1.025 after treatment, the outcome is measured
positive. In syndrome of unsuitable antidiuretic hormone (SIADH), the specific
gravity is greater than 1.025. Small cell lung cancer is a risk factor of SIADH.
Trait is an obvious, observable, and measurable trait; it is the expression of genes in an observable way. An example of a phenotypic trait is a specific hair color
