Linguatula serrata is one of well-known members of Pentastomida which infects both humans and animals. The aim of this study was to evaluate the prevalence of L. serrata in mesenteric lymph nodes, livers and lungs of goats slaughtered in Tabriz area, Iran. Mesenteric lymph nodes (MLNs), livers and lungs of 280 goats slaughtered in Tabriz, North-west of Iran were investigated for nymphs of L. se...

A new genus and species Callopistiella atacamensis gen. nov. and sp. nov. (Acariformes: Pterygosomatidae) are described from Callopistes maculatus (Squamata: Teiidae) in Chile. In this species, both sexes are characterized by the hypostome without a velum, the chelicerae proximally globose and very thin distally, ending in a movable digit curved outward, the fixed cheliceral digit reduced to a ...

This review will first cover the researches done in determining KNOX family gene functions and mechanisms. Followed by phylogenetically, how KNOX family proteins expressed differently in different species functioned differently, and the differences between single leaved and compound leaved species. Onto the significance of different expression pattern of KNOX genes in developing tomato compound...

One new species of Naidinae (Oligochaeta, Naididae), Naisbadia sp. n. and one new record species from China, Tubifexmontanus Kowalewski, 1919 (Tubificinae) are found in southern Tibet. The new species is distinguished from congeners by its large area of reddish brown pigment in the anterior segments I-VIII, serrate hairs, pectinate needles with 1-2 intermediate teeth, ventral chaetae partly wit...

A new species of Espeleonaushonia is described from a single specimen collected in an underwater cave in Babeldaob Island, Republic of Palau. The new species is placed in Espeleonaushonia based on the following characters: exopod of third maxilliped well developed, propodus of first pereopod with spines on dorsal surface and along mesial and lateral margins; second pereopod not chelate with dac...

Anthropogenic removal of natural dispersal barriers and modification of natural habitats have contributed to the spread of non-native species. Potential invaders that are cryptic in appearance and/or behaviour are particularly troublesome as this confounds efforts to detect or manage incipient invasions. Here we report one such invader, the Florida serrate crownsnail, Pyrgophorus platyrachis Th...

The Notch pathway regulates cell proliferation, cell fate, differentiation, and cell death in all metazoans. Notch itself is a cell-surface receptor that transduces short-range signals by interacting with transmembrane ligands such as Delta (termed Delta-like in humans) and Serrate (termed Jagged in humans) on neighboring cells (Fig. 1). Some soluble ligands have also been identified in Caenorh...

In plant, primary transcripts (pri-miRNAs) transcribed from miRNA genes by RNA polymerase II are first processed into stem-loop pre-miRNAs and further chopped into ∼21 nt long miRNAs by RNase III-like enzyme DCL1. SERRATE (SE) protein is an essential component for miRNA processing by assisting DCL1 for accurate cleavage. Here we report the crystal structure of Arabidopsis SE core (residues 194-...

A new species, B ry m ela a n tio q u ia S.P. Churchill & J.J. Atwood, is described and illustrated from Colombia. The species superficially similar to B. p rk e r (Hook. Grev.) W.R. Buck - northern Amazonia, the Guianas Lesser Antilles in its weakly complanate habit straight, oblong-lanceolate leaves. differs having: longer leaves (3.6-4.0 versus 2.1-3.2 mm); long-acuminate obtuse acute le...