A cytological revisit on parthenogenetic Artemia and the deficiency of a meiosis-specific recombinase DMC1 in the possible transition from bisexuality to parthenogenesis.

Although parthenogenesis is widespread in nature and known to have close relationships with bisexuality, the transitional mechanism is poorly understood. Artemia is an ideal model to address this issue because bisexuality and "contagious" obligate parthenogenesis independently exist in its congeneric members. In the present study, we first performed chromosome spreading and immunofluorescence to compare meiotic processes of Artemia adopting two distinct reproductive ways.

Downregulation of a CT10 regulator of kinase (Crk) promotes the formation of diapause embryos in the brine shrimp Artemia.

To survive under harsh environments, embryonic development of Artemia was arrested at the gastrula stage and released as the diapause embryo. Cell cycle and metabolism were highly suppressed in this state of quiescence. However, cellular mechanisms underlying diapause remain largely unclear.

Identification and characterization of the Doublesex gene and its mRNA isoforms in the brine shrimp Artemia franciscana.

Doublesex (DSX) proteins are members of the Doublesex/mab-3-related (DMRT) protein family and play crucial roles in sex determination and differentiation among the animal kingdom. In the present study, we identified two Doublesex (Dsx)-like mRNA isoforms in the brine shrimp Artemia franciscana (Kellogg 1906), which are generated by the combination of alternative promoters, alternative splicing and alternative polyadenylation. The two transcripts exhibited sex-biased enrichment, which we termed AfrDsxM and AfrDsxF.

A Case of Complete Remission from Advanced Gastric Adenocarcinoma with Synchronous Liver Metastasis in Response to EOX Chemotherapy.

Gastric cancer is a malignant tumor with a high degree of malignancy. Multiple liver metastases from gastric cancer (LMGCs) are common. However, the treatment of LMGCs is very difficult.

Tetra-aqua-bis-(1,10-phenanthroline-κN,N')strontium 5,5'-diazene-diyl-ditetra-zolide.

The title complex, [Sr(C(12)H(8)N(2))(2)(H(2)O)(4)](C(2)N(10)), contains an [Sr(phen)(2)(H(2)O)(4)](2+) cation (phen is 1,10-phenanthroline) and a 5,5'-diazenediylditetra-zolide anion (site symmetry 2). The Sr(2+) cation (site symmetry 2) is coordinated by four N atoms from two chelating phen and four water mol-ecules. In the crystal structure, the water mol-ecules and the N atoms in the tetra-zolide rings form an extensive range of O-H⋯N hydrogen bonds which link the complex into a two-dimensional structure.

catena-Poly[[[tetra-aqua-iron(II)]-μ-5,5'-diazenediylditetra-zolido] dihydrate].

In the title compound, {[Fe(C(2)N(10))(H(2)O)(4)]·2H(2)O}(n), the coordin-ation geometry around the Fe(II) atom, which lies on a center of inversion, is distorted octa-hedral, with bonds to four O atoms and two N atoms. The azotetra-zolate ligand displays a bridging coordination mode, forming an infinite zigzag chain. Inter-molecular O-H⋯O and O-H⋯N hydrogen bonding and offset face-to-face π-π stacking inter-actions [centroid-centroid distance = 3.