خيارات البحث
النتائج 1 - 10 من 16
Anatomical and histological studies on the developing pancreas of chicken embryos
1999
Ku, S.K. (Dong-Wha Pharmaceutical Industry Company, anyang (Korea Republic). Pharmacol & Toxicol Laboratory, Central Research Laboratories) | Lee, J.H. (Kyungpook National University, Taegu (Korea Republic). Laboratory of Histology, College of Veterinary Medicine) | Lee, H.S. (Kyungsan University, Kyungsan (Korea Republic). Department of Biology, Faculty of Natural science)
Anatomical and histological changes were studied in the dorsal, ventral, third and splenic lobes of the pancreas of the chicken embryos (8 days of incubation, 10 days of incubation to hatching). From 13 days of incubation, all four pancreatic lobes, namely, dorsal, ventral, third and splenic lobes were observed. Histologically, the pancreas of 10-14 days of incubation were consisted of mesenchymal tissue, exocrine acini and pancreatic islets. But mesenchymal tissues were disappeared from 15 days of incubation. The pancreatic ducts were observed from 14 days of incubation. The dark and light typed pancreatic islets were observed in splenic lobe from 13 days of incubation, in the third lobe from 11 days of incubation, and in the dorsall lobe from 13 days of incubation. But no dark typed islets were observed in the ventral lobes.
اظهر المزيد [+] اقل [-]Embryotoxic effects of DA-125, a new anthracycline anticancer agent, in rats
1994
Chung, M.K. | Kim, J.C. (Korea Research Institute of Chemical Technology, Taejon (Korea Republic). Toxciology Research Center)
Effects of cryoprotectants and sucrose concentrations on the viability of aggregated mouse embryos frozen rapidly in liquid nitrogen vapour
1991
Shin, S.T. (Chungnam National Univ., Taejon (Korea Republic). Coll. of Veterinary Medicine)
Changes of membrane resistance and membrane potentials by hyperpolarizing current stimulation in mouse unfertilized eggs
1991
Hong, S.G. | Kim, I.H. (Gyeongsang National Univ., Chinju (Korea Republic). School of Medicine, Dept. of Physiology) | Cho, Y.D. (Kosin Medical School, (Korea Republic). Dept. of Radiology)
Effects of ibaraki virus on viability of preimplantation mouse embryos
1989
Kim, Y.J. | Jo, C.H. (Seoul National Univ., Suwon (Korea R.). Coll. of Veterinary Medicine)
To study the effects of ibaraki virus on preimplantation mouse embryos collected from prepubertal ICR and BALB/cByJ mice (30-40 days old) by superovulation, zona pellucida-intact (ZPI) or free (ZPF) embryos (n=774) of 4- to 8-cell and morulae were exposed to 10** (5.8) TCID50 of the viurs up to 96 hours. The embryos were examined morphologically by observing the degeneration and hatching rates, and virologically and immunologically by determining the presence of infection with the virus, in addition, the effect of washing the embryos to remove virus possibly attached to was also investigated. The ZPI 4- to 8-cell embryos and morulae exposed to the virus showed considerably higher degeneration rate than those not exposed, for 96, and for 72 to 96 hours, respectively (p0.01). The ZPF 4- to 8-cell embryos and morulae exposed to the virus showed considerably higher degeneration rates than those not exposed, throughout the whole culture hours in vitro (p0.01). The ZPI 4- to 8-cell embryos and morulae not exposed to the virus showed considerably higher rates of hatched blastocyst than those exposed (p0.01). The virus infection rates of the ZPF 4- to 8-cell embryos and morulae were significantly higher than those of the ZPI embryos according to cell culture system. The viral antigen was detected exclusively on the zona pellucida of ZPF embryos by the immunofluorescent assay. In the ZPI embryos exposed to ibaraki virus, the virus was detected in the two times-washing groups, but not in the ten times-washing groups. The results indicated that zona pellucida of murine embryos would provide an effective protection and that ten times-washing of the ZPI embryos previously exposed to the virus was effective to remove virus from the embryos
اظهر المزيد [+] اقل [-]Studies on the teratogenicity of folpet in the developing chick embryo
1994
Lim, Y.K. (Cheju National University, Cheju (Korea Republic). Department of Veterinary Medicine) | Heo, G.J. (Chungbuk National University, Cheongju (Korea Republic). Department of Veterinary Medicine) | Lee, Y.S. (Seoul National University, Suwon (Korea Republic). College of Veterinary Medicine)
Teratogenic effects of diazinon in chick embryos-(1)-Effects of diazinon treatment on morphology and cholinergic blocking agents
1994
Kim, J.S. | Kim, G.S. | Kim, Y.M. | Choi, W.Y. (Gyeongsang National University, Chinju (Korea Republic). College of Veterinary Medicine) | Son, S.G. | Heo, J.H. | Lee, J.H. (Gyeongnam Veterinary Service Laboratory, Chinju (Korea Republic). Southern Branch)
Fetal growth retardation induced by maternal exposure to phenol in the rat
1994
Chung, M.K. (Korea Research Institute of Chemical Technology, Taejon (Korea Republic). Toxicology Research Center)
Fertilization In vitro of follicular oocytes and cryopreservation of embryo fertilized and developed In vitro in Korean native cattle
1993
Choe, S.Y. | Rho, G.J. (Gyeongsang National University, Chinju (Korea Republic). College of Veterinary Medicine) | Kong, I.K. | Joo, Y.K. | Park, C.S. (Gyeongsang National University, Chinju (Korea Republic). College of Agriculture) | Kim, Y.K. (Samcheonpo Office of Rural Guidance, Samcheonpo (Korea Republic))
Nonsurgical transfer of fresh and frozen embryos of dairy cattle
1992
Kim, I.H. | Son, D.S. | Lee, K.W. (Nat'l Animal Breeding Inst., Seoul (Korea Republic)) | Chang, I.H. (Kyungpook Nat'l Univ., Taegu (Korea Republic). Coll. of Veterinary Medicine)