This infection of the respiratory system is secured most readily by an inoculation of the virus directly into the amniotic cavity. Various techniques have been devised for this purpose ...

It is a thin but tough transparent pair of membranes that hold a developing embryo (and later fetus) until shortly before birth. The inner of these membranes, the amnion, encloses the amniotic cavity, ...

Eventually the free edges of the folds fuse and completely enclose the body of the embryo in the amniotic cavity. When the amniotic folds fuse, the two membranes are formed, with the amnion next to ...

Eventually the free edges of the folds fuse and completely enclose the body of the embryo in the amniotic cavity. When the amniotic folds fuse, the two membranes are formed, with the amnion next to ...