Crystal structure of the ATP-gated P2X4 ion channel in the closed state Comparison of conventional Papanicolaou smears and a fluid-based, thin-layer system for cervical cancer screening. Ultimate Attainment in Second Language Acquisition Comparison of performance of conventional and ThinPrep gynecologic preparations in the College of American Pathologists Gynecologic ... On the Evidence for Maturational Constraints in Second-Language Acquisition ☆ Age and Second Language Acquisition and Processing: A Selective Overview A study of the vertebral column and median fin osteology in gobioid fishes with comments on gobioid relationships Differential binding of NAD+ and NADH allows the transcriptional corepressor carboxyl-terminal binding protein to serve as a metabol... Cytotoxic effects of NaOCl on vital tissue * INFECTIOUS DISEASE IN ENGLAND AND WALES DURING THE WEEK ENDED JULY 11TH, 1931.