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.
A Variant is a special data type that can contain any kind of data except fixed-length String data. (Variant types now support user-defined types .) A Variant can also contain the special values Empty, Error, Nothing, and Null. You can determine how the data in a Variant is treated using the VarType function or TypeName function.