This study was supported by the National Natural Science Foundation of China(39970547);Natural Science Fund of Hubei Province(98J012).We greatly appreciate Academician Chen Huanchun,the vice president of Huazhong Agricultural University,China,for his help and approval on this study.
Healthy Cherry Valley ducks were used in the present study. Different doses of tryptophan were injected intraperitoneally to them after being fasted 4 h (8:00 a.m.-12:00 a.m.). One hour later, they were deeply ana...
In order to provide the morphological evidence for investigating the physiological function of medulla oblongata of African ostrich, the study was carried out via paraffin continual sections and haematoxylin-eosine (H...