The final larval stadium of Heteragrion majus Selys, 1886 and H. atrolineatum Donnelly, 1992 are described and illustrated for the first time, using reared material from Costa Rica, and compared with other species of the genus known from the country. All species were very similar as larvae, but they can be separated by the presence and distribution of antennal setae, spines on the posterior mar...

Cover Illustration: The study of biodiversity is fundamental to our understanding of life on Earth and to confronting some of the problems caused by our own species. Further, we increasingly count on biodiversity for a wide variety of ecosystem functions and services amidst a gauntlet of anthropogenic changes. In fact, biodiversity is disappearing at a rate even faster than the last mass extinc...

The flowers of the primitive angiosperm plants were radially symmetrical (actinomorphic). Flowers with bilateral symmetry (zygomorphic) evolved in several clades independently as an adaptation to specialized methods of pollination and played an important role in the diversification of flowering plants. In the model species Antirrhinum majus (snapdragon), the related genes CYCLOIDEA (CYC) and DI...

History.?Married?mother of 5 children?last child aged 3 years?all the children are alive and all the labours were normal. For 15 years the patient has had occasional temperature at night. Sometimes she used to have swelling of the right leg which lasted for about 10 or 15 days. For the past 12 years she noticed thickening of her left labium majus, the swelling gradually becoming bigger and bigg...

The extremely homogeneous organization of the transposon family Tam3 in Antirrhinum majus is in sharp contrast to the heterogeneity of the copies constituting many other transposon families. To address the issue of the Tam3 structural uniformity, we examined two possibilities: (1) recent invasion of Tam3 and (2) failure of gap repair, which is involved in conversion from autonomous forms to def...

Chelidonium majus L. (Papaveraceae) is a medicinal herb used in various traditional systems of medicine to treat ulcer, cancer, oral infection, liver disorders, chronic bronchitis, asthma, etc. Different parts of this plant contain numerous therapeutically important alkaloidal constituents such as chelidonine, chelerythrine, sanguinarine, berberine and so on. The plant and its active compounds ...