Adenosine receptors (nomenclature as agreed by the NC-IUPHAR Subcommittee on Receptors [110]) are activated endogenous ligand adenosine (potentially inosine also at A3 receptors). Crystal structures for antagonist-bound [153, 313, 221, 61], agonist-bound [375, 203, 204] and G protein-bound A2A [49] have been described. The of an A1 receptor [128] adenosine-bound receptor-Gi complex [86] resolve...

OBJECTIVE A study of two cases of a rare variant of benign schwannoma showing areas mimicking neuroblastoma/peripheral primitive neuroectodermal tumour (PNET). METHODS Sections of formalin fixed, paraffin embedded specimens were studied by tinctorial stains and immunohistochemistry, and the tissue retrieved from formalin was examined by electronmicroscopy in one case. RESULTS The tumours we...

Adenosine receptors (nomenclature as agreed by the NC-IUPHAR Subcommittee on Receptors [112]) are activated endogenous ligand adenosine (potentially inosine also at A3 receptors). Crystal structures for antagonist-bound [155, 316, 224, 62], agonist-bound [379, 205, 206] and G protein-bound A2A [49] have been described. The of an A1 receptor [130] adenosine-bound receptor-Gi complex [87] resolve...

Metal oxides play a very important role in many areas of chemistry, physics and materials science.The metal elements are able to form a large diversity of oxide compounds. In this investigation, wesynthesis SnO2 and C,N,S-tridoped SnO2 nanoparticles by precipitation method. The synthesizedSnO2 and C,N,S-tridoped SnO2 nanoparticles were characterized by instrumental analysis methods,such as X-ra...