Embryology of the eye.

THE PROTECTIVE EFFECT OF INDOMETHACINE ON SULFUR MUSTARD-INDUCED OCULAR DAMAGE IN THE RABBIT EYE

Sulfur mustard, a bifunctional alkylating agent, causes severe eye injury. The injury is a result of late inflammation, which is mediated by prostaglandins. Theoretically, inhibition of prostaglandins by reagents such as indomethacine could result in alleviation of clinical adverse effects. In this study, the protective effect of topically applied indomethacine against sulfur mustard toxici...

The retinotectal projections after uncrossing the optic chiasma in Xenopus with one compound eye.

The eye margin and compound-eye development in the cockroach: evidence against recruitment.

The compound eye of the cockroach nymph grows from stadium to stadium by the addition of new ommatidia to the growing edge of the eye. By a series of transplant operations on Periplaneta americana and from SEM studies on Gromphadorhina portentosa it is shown that the proliferating region of the eye margin is a budding zone. There is no recruitment of larval head-capsule epidermis into the eye.

Postembryonic growth of the compound eye of the cockroach.

The postembryonic growth of the compound eye of the cockroach Periplaneta americana involves increases in the size of the individual ommatidia as well as a 35-fold increase in the number of ommatidia. These ommatidia are added to the anterior, dorsal, and ventral margins of the eye by means of an almost continuous process of cell division in the proliferation zone in these margins. This prolife...

Small group discussion for medical students to learning embryology

Background: One of the most important issues is the best method to teach embryology course to medical students. Small group discussion (SGD) were used to working together, integral to learningdeveloping intellectual skills and interactive learning experience. Methods: The 72 medical students were equally randomizedto the SGD (group I) and usual lecture based teaching (LBT), (group II) in genera...

Retino-tectal projections from half-ventral and half-dorsal eye rudiments in Xenopus.

When the ventral half of a developing eye in Xenopus larvae was removed at stage 32, the remaining fragment rounded up and developed into an eye which looked macroscopically normal by mid-larval stages. Eyes from half-dorsal rudiments were usually small, had more than one ventral fissure, and showed abnormal pupils. The contralateral retinotectal projection was always found to be normally order...