title: Daily variation in rat growth hormone concentration and the effect of stress on periodicity.
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D002940:Circadian Rhythm; D003345:Corticosterone / Q000097:blood; D005019:Ethyl Ethers / Q000494:pharmacology; D013006:Growth Hormone / Q000097:blood / Q000378:metabolism*; D008297:Male; D010902:Pituitary Gland / Q000378:metabolism*; D011336:Probability; D011863:Radioimmunoassay; D051381:Rats; D013312:Stress, Physiological / Q000378:metabolism*; D013997:Time Factors
chemical_list: D005019:Ethyl Ethers; D013006:Growth Hormone; D003345:Corticosterone