title: Sex hormone binding globulin levels and free progesterone, testosterone and estradiol 17 beta during the annual cycle of the female turtle, Chrysemys picta.
abstract: Significant changes in % free serum E2, T and P were observed during the annual cycle of the turtle. In contrast no significant changes in SHBG affinity constants (2.29-4.48 x 10(8) M-7) were found and binding capacity for estradiol 17B was between 3.47 and 3.96 x 10(-7) M except in preovulatory animals (2.00 +/- 0.25).
authors.affiliation: Department of Biology, Boston University, MA 02215.
authors.forename: C
authors.initials: C
authors.lastname: Albert
authors.forename: I P
authors.initials: IP
authors.lastname: Callard
mesh_terms: D000818:Animals; D004958:Estradiol / Q000097:blood*; D005260:Female; D011374:Progesterone / Q000097:blood*; D012738:Sex Hormone-Binding Globulin / Q000378:metabolism*; D013739:Testosterone / Q000097:blood*; D014426:Turtles
chemical_list: D012738:Sex Hormone-Binding Globulin; D013739:Testosterone; D011374:Progesterone; D004958:Estradiol