Add to ORKGThe question as to the comparative structure and origin of the yolk nucleus involves several other problems: 1. Is the yolk nucleus a normal element of the egg cytoplasm, or is it associated with pathological states of the egg, or is it an artefact due to reagents? 2. Is there a necessary connection between one form and another such that one can be derived from the other? 3. Is it an amorphous chemical substance or does it possess anything suggesting permanence of structure? 4. Does it arise de novo or is it a modification of something similar existing in the cytoplasm of the oogonium? 5. Does it arise from chromatin eliminated from the germinal vesicle? 6. Is it due to cells entering the egg? The answer to these questions will determine wh...
During the first three cleavage divisions of the egg nuclei a precise sequence of spindle orientatio...
A modification of the method of analysis of Schmidt and Thannhauser for the estimation of nucleic ...
An ultrastructural study using electron microscopy was undertaken of yolk and yolk sac to elucidate ...
It is the purpose of this paper to contribute some information concerning certain cytoplasmic compon...
I. At least two kinds of yolk are developed in the eggs of Drosophila melanogaster. The origin of th...
The yolk-nucleus appears as an organelle in contact with the nucleus in the early oocyte. It is sphe...
... continued on p. 3... continued on p. 7 I t is of historical interest that the yolksac is a misna...
Observational part: 1. The ctenophore egg is composed of (a) the outer homogeneous layer, (b) ectopl...
In all the oviparous vertebrates, also showing different reproductive modes, that is, oviparity, ov...
Differentiation begins early in embryogenesis as different genes become active in different cells. W...
1. The Golgi bodies in the oocytes of Stomopneustes secrete both fatty and albuminous yolk grains. 2...
0In this study, the development of the yolk nucleus in cytoplasm of previtellogenic oocytes was exam...
Yolk formation is one of the most important events during oogenesis. Thus, for a long time the vitel...
The problem of the nature and type of chemical compounds utilized during the embryonic development o...
In triatomines, as well as in other insects, accumulation of yolk is a process in which an extra-ova...
During the first three cleavage divisions of the egg nuclei a precise sequence of spindle orientatio...
A modification of the method of analysis of Schmidt and Thannhauser for the estimation of nucleic ...
An ultrastructural study using electron microscopy was undertaken of yolk and yolk sac to elucidate ...
It is the purpose of this paper to contribute some information concerning certain cytoplasmic compon...
I. At least two kinds of yolk are developed in the eggs of Drosophila melanogaster. The origin of th...
The yolk-nucleus appears as an organelle in contact with the nucleus in the early oocyte. It is sphe...
... continued on p. 3... continued on p. 7 I t is of historical interest that the yolksac is a misna...
Observational part: 1. The ctenophore egg is composed of (a) the outer homogeneous layer, (b) ectopl...
In all the oviparous vertebrates, also showing different reproductive modes, that is, oviparity, ov...
Differentiation begins early in embryogenesis as different genes become active in different cells. W...
1. The Golgi bodies in the oocytes of Stomopneustes secrete both fatty and albuminous yolk grains. 2...
0In this study, the development of the yolk nucleus in cytoplasm of previtellogenic oocytes was exam...
Yolk formation is one of the most important events during oogenesis. Thus, for a long time the vitel...
The problem of the nature and type of chemical compounds utilized during the embryonic development o...
In triatomines, as well as in other insects, accumulation of yolk is a process in which an extra-ova...
During the first three cleavage divisions of the egg nuclei a precise sequence of spindle orientatio...
A modification of the method of analysis of Schmidt and Thannhauser for the estimation of nucleic ...
An ultrastructural study using electron microscopy was undertaken of yolk and yolk sac to elucidate ...