A contribution to insect embryology

A Contribution to the Embryology of Rhynchelytrum Repens (willd) C.e. Hubbard

The present investigation deals with morphological and embryological studies of Rhynchelytrum repens (Willd) C.E. Hubbard. The development of anther walls are found to be Monocotyledonous type. The tapetal cells are substantially large, glandular and uninucleate. The middle layer is ephemeral and their cells are small in size. It is sandwiched between endothecial and tapetal layer. The endothec...

Aids to Embryology

Riboflavin Provisioning Underlies Wolbachia’s Fitness Contribution to Its Insect Host

UNLABELLED Endosymbiotic bacteria of the genus Wolbachia represent the most successful symbiotic bacteria in the terrestrial ecosystem. The success of Wolbachia has been ascribed to its remarkable phenotypic effects on host reproduction, such as cytoplasmic incompatibility, whereby maternally inherited bacteria can spread in their host populations at the expense of their host's fitness. Meanwhi...

The contribution of chicken embryology to the understanding of vertebrate limb development

The chicken is an excellent model organism for studying vertebrate limb development, mainly because of the ease of manipulating the developing limb in vivo. Classical chicken embryology has provided fate maps and elucidated the cell-cell interactions that specify limb pattern. The first defined chemical that can mimic one of these interactions was discovered by experiments on developing chick l...

Contribution of Women Scientists to Pharmacology: A Historical Perspective

The article highlights the contributions of a few prominent women scientists to the science of pharmacology. These women,some of whom were from other scientific fields, contributed significantly to our understanding of pharmacology. This was achieved in an era in which pharmacology was a more or less male dominated field. Even though it is easier for women to enter scientific fields nowadays, t...