2. Plasma levels of estradiole (T) in female Clarias gariepinus
breeders, 6 h (closed column, lowercase letters) and 12 h (open
column, capital letters) after treatment with saline (control), ovaprim,
GnRH(20), GnRH(40), PIM(8), PIM(16) and the combined
GnRHaPIM (204), (308) and (4016).