The backbone of the CIDR is a nylon spine covered by a progesterone (1.38 g) impregnated silicone skin. During the seven days in the vagina the CIDR releases a relatively constant dosage of progesterone. Upon removal of the insert, progesterone is quickly eliminated.
variant. an organism or tissue that is different from the majority of the population but is still sufficiently similar to the common mode to be considered to be one of them, e.g. a variant strain of classical swine fever (hog cholera) virus. 1  Facebook.
Characterized by having a mayor who is elected by the voters, the mayorâcouncil variant may be broken down into two main variations depending on the relationship between the legislative and executive branches, becoming a weak-mayor or a strong-mayor variation based upon the powers of the office.