Down syndrome (DS) was first described in 1866 by John Langdon the developing brain, they observed decreased nuclear levels of cyclin Down and it is now recognized as themost common chromosomal disorder and cause of intellectual disability (Haydar and Reeves, 2012). Despite its prevalence (roughly 1 in 1000 births), the cause of the disease was not identified until 1959 when karyotyping enabled...

Submersed macrophytes have important ecological roles but non-native invasive species may affect biodiversity and water uses. We investigated the native macrophyte Egeria najas Hydrilla verticillata measured their maximum colonization depth its relationship with Secchi disk depth, biomass along gradient preferred depths of occurrence. The Itaipu Reservoir was monitored for seven years, during w...

The article provides information about rare and newly described species for the flora of Urals adjacent territories, namely: Astragalus saphronovae Kulikov, Atraphaxis decipiens Jaub. et Spach., Carex amgunensis F. Schmidt, Galium densiflorum Ledeb., Jovibarba globifera (L.) J. Parn., Najas minor All., Potamogeton nodosus Poir., Pseudorchis albida Á. Löve D. Löve, Salix myrsinites L., Veronica ...