The dead embryos and normal developing embryos during hatching period of eggs from yellow chicken bred by Wenshi Poultry Breeding Company in China were collected to search for the mutation of candidate genes IGF2R related to embryos development in human and mouse,to investigate the effects of the mutation of genes IGF2R on death of embryo.

Role of low estrogen in follicle/oocyte maturation and embryo development;

In vitro fertilization and subsequent embryo development using oocytes derived from abattoir ovaries or collected by transvaginal follicle aspiration in water buffalo;

Cloning and expression of nanos, a gene related to germ stem cell and its expression pattern in embryo development in silkworm;

Influences of Caffeine Exposure on Embryonic Development in Mice;

Alterations in hepatic metabolism of adult male rats following exposure to hydroxyprogesterone during embryonic development;

Effects of endocrine disrupting chemicals methoxychlor on reproduction and embryonic development;

The effect of overexpression of Hira on embryogenesis of Drosophila melanogaster;

Lewis oligosaccharide antigens (Lewis X, Lewis Y) which were expressed on embryonic surface play important roles during embryogenesis and implantation.

Objective To observe the ER ultrastructures in humn embryonic epithelial cells of colonic mucosa、renal tubule and hepatocytes and also their alterations in embryogenesis.

Objective To explore the fetation adverse effects of hair curling solution and mousse in mice.

In order to probe into effects of zoology environment and weather on fetation of Hynobius Leechii Boulenger,we have observed fetation of Hynobius Leechii Boulenger in Xiuyan and Qianshan area.

This paper consists of two main parts, the first part is about the fetation of Cynoglossus semilaevis and the second part is about the Cynoglossus semilaevis juvenile nutritional needs.