Endogenous retroviruses are a type of endogenous viral element. MLVs include both exogenous and endogenous viruses. Mitogens can be either endogenous or exogenous factors. CYPs metabolize thousands of endogenous and exogenous chemicals. The genomes of exogenous and endogenous murine leukemia viruses have been fully sequenced. There are exogenous processes and endogenous processes. Intestinal gas is composed of varying quantities of exogenous sources and endogenous sources. This failure to change presentation can result from endogenous and exogenous factors. Attention can be divided into two major attentional systems&colon; exogenous control and endogenous control. Traditionally, causes of FTT have been divided into endogenous and exogenous causes. Sub-specialities of geology may distinguish endogenous and exogenous geology. The types of pyrogens inlcude internal (endogenous) and external (exogenous) to the body. Neurotransmitters are endogenous chemicals that enable neurotransmission. Drugs that inhibit the breakdown of endogenous opioids also potentiate the antinociceptive effects of . Cariprazine has partial agonist as well as antagonist properties depending on the endogenous dopamine levels.