Somatic embryogenesis and regeneration of plants in the bamboo Dendrocalamus strictus.

Somatic embryogenesis leading to plant regeneration has been achieved in the bamboo, Dendrocalamus strictus, by culturing seeds (caryopses) on B5 basal medium supplemented with 2,4-dichlorophenoxyacetic acid. Callus cultures obtained from the embryonal end of the seeds differentiated chlorophyllous embryoids. On transfer to a germination medium (B5 liquid, sucrose, indolebutyric acid, and ∝ -naphthaleneacetic acid) 40% of the embryoids developed into plantlets.

Valve replacement in children under twenty years of age. Experience with the Björk-Shiley prosthesis.

Prosthetic valve replacement in young patients has been reported to be associated with a high mortality and morbidity because of valve-related problems. Of 549 patients undergoing valve replacement with the Björk-Shiley valve prosthesis, 136 were under the age of 20 years. Sixty-four patients were under 16 years of age, the youngest being 6 years old.

Thrombotic obstruction of Bjork-Shiley valves--diagnostic and surgical considerations.

We have evaluated 12 patients with thrombotic obstruction of the Bjork-Shiley valve since 1975, 11 in the mitral and 1 in the aortic position. During this period 442 patients with 303 mitral (181 plano-convex and 122 convexo-concave) and 205 aortic (112 plano-convex and 93 convexo-concave) Bjork-Shiley valves were available for follow-up. The incidence of thrombosis for the plano-convex model was 1.

Direct inhibitory effect of gonadotropin releasing hormone in the uterus of rat.

Estradiol induced increase in ornithine decarboxylase (ODC) and glucosamine-6-phosphate synthase activities of rat uterus were inhibited by simultaneous treatment with gonadotropin releasing hormone (GnRH) or its agonists. The direct inhibitory effect of GnRH analogs was found to be dose dependent. It was observed that a higher dose of GnRH analog was needed to cause inhibition of glucosamine-6-phosphate synthase when compared to ODC activity.

Effects of SO(2) on Stomatal Metabolism in Pisum sativum L.

Pea (Pisum sativum L. cv ;Little Marvel') plants were exposed to SO(2) for short term (3 hours) and long term (2 days) at 0.2 and at 0.

Light and Stomatal Metabolism : II. Effects of Sulfite and Arsenite on Stomatal Opening and Light Modulation of Enzymes in Epidermis.

The effect of sulfite and arsenite on stomatal opening and light modulation of enzymes was examined in isolated epidermal strips of Pisum sativum L. var Little Marvel leaves. Sulfite or arsenite at 10 micromolar rapidly inhibited the stomatal opening process in light.

Light and stomatal metabolism : I. Possible involvement of light modulation of enzymes in stomatal movement.

New evidence is provided regarding the direct effect of light on stomatal opening in the epidermis of the pea (Pisum sativum L. var Little Marvel) leaf. Light modulates the activity of a number of key enzymes involved in stomatal metabolism.

Thiamine refractory-wernicke-korsakoffs syndrome - a case report.

A case of Thiamine refractory Wernicke-Korsakoff syndrome, successfully treated with the combination of magnesium sulphate and thiamine is presented. The role of Magnesium Sulphate in such cases has been discussed.

Juvenile manic depressive psychosis - report of 3 cases.

Three patients, one female and two males, with bipolar affective psychosis beginning at the ages of twelve, nine and fourteen years, are described. The symptomatology in all the three patients was similar to that of the adult manic depressive psychosis and the response to lithium was good.

Central anticholinergic syndrome presenting as akinetic mutism.

A case of central anticholinergic syndrome due to overdosage of trihexyphenidyl hydrochloride presenting as septal akinetic mutism with unequally dilated pupils is discussed in reference to similar presentation in animals and possible clinical application.