The dorsoventral polarity of Drosophila egg is established by means of signaling between the germ line-derived oocyte and the surrounding somatic follicle cells.
Distinct series on head region included the nasal, supraorbital, infraorbital, postorbital, oral, mandibular, gular, supraspiracular series and pair of dorsal line on the body.
The paper introduced the construction technology of liquid flyash pouring retailing backwall in order to assure refill quality of retailing backwall,protect retailing backwall depression or jumping.
In addition, the product should be kept in temperature and humidity relatively stable environments, overdried or over-wet will cause a change in the appearance quality of books.
Loach about 10 cm long, yellow sand, yellow sand that they are not exact, because of their paranotum, back dotted with black spots and tidy, like the black stripes, seen from afar like a sand silt .