Relative expression of npy mRNA in tissues of gibel carp. Error bars represent standard error of the mean. Tep, telencephalon; Hyp, hypothalamus; Mep, mesencephalon; Ceb, cerebellum; Myp, myelencephalon; Pi, pituitary; Hk, head kidney; Tk, trunk kidney; Li, liver; Fg, foregut; Mg, midgut; Hg, hindgut; He, heart; Sp, spleen; Gi, gill; Te, testis; Ov, ovary. Re, red muscle; Wh, white muscle; Sk, skin; Ey, eye.