Oil droplets in the chameleon (Chamaeleo chamaeleo) retina.

The cones of the chameleon retina have, in the scleral portion of their inner segment, an oil drop whose morphology is similar in all the photoreceptors possessing this droplet. The irregularities in the membrane surrounding the lipid matrix show close relationships with the surrounding mitochondria.

Developmental study of axon formation in the horizontal neurons of the retina of the chick embryo.

Among the types of horizontal cells of the avian retina, one has been described that has an axon terminating in a typical structure. The present study analyses the histogenesis of this axon whose initial outgrowth occurs on day 14 of incubation (HH-40). The axon terminal is first detectable, towards day 15 of incubation (HH-41), in the form of a varicose thickening possessing short filopodia.

Alpha chain disease of the stomach.

A case of gastric lymphoplasmocytoid lymphoma with alpha heavy chains in the serum is reported. The patient was a 20-year-old female who had a gastric lymphomatous ulcer and who died of acute bleeding, with no clinical or radiological signs of small intestine involvement. This seems to be the first reported case of gastrin alpha heavy chain disease.