Gonadotroph common α, luteinising hormone (LHβ), follicle-stimulating hormone (FSHβ) and thyroid-stimulating hormone (TSHβ) subunit mRNA levels, normalised to mGapdh mRNA in adult control, FSHβKO FSHRKO, LuRKO, hpg and ovariectomised female mice. Results are expressed as the mean ± SEM. **P < 0.01 versus respective strain control, n = 4 mice per group. Open columns, control mice; filled columns, mutant mice, knockout (KO) or hpg; striped columns, ovariectomised (OVX) mice. hpg, hypogonadal; KO, knockout; LuR, LH receptor; R, receptor.