Cardiac hypertrophy exceeding 1000 grams in weight is rare. Golden and Brams (1937) could only find 37 cases recorded, excluding the 9 that they themselves reported. They did not include in their survey the cases occurring in acromegaly, to which Courville and Mason (1938) drew attention. In the two cases here reported the hearts weighed 1350 and 900 grams respectively and were associated with ...

The thermal denaturation of DNA from cell lines extensively substituted with bromodeoxyuridine has been examined spectrophotometrically over a wide range in ionic strength and by thermal elution from hydroxyapatite columns. BrdU substitution stabliizes DNA at all ionic strengths between 7.5 mM and 1350 mM potassium ion concentration, although a plot of log ionic strength vs Tm deviates from lin...

Introduction: Pt nuggets found in the silicate glass of solubility experiments at low fO2 may be the quench products of Pt in solution in silicate liquid, not mechanical contaminants. Pt solubilities measured in the range of geologically interesting fO2 would then be several orders of magnitude higher than conventionally assumed. Such a finding may remove the perception of "excess" Pt in Earth'...

Results of the SF, sensitized infrared pulsed laser powered homogeneous pyrolysis of dichlorosilane are reported. Pyrolyses at temperatures of 1350 to 1700 K and pressures of 150 to 230 Torr with reaction times around 7 ,us were carried out in the presence and absence of molecules that could potentially scavenge the primary decomposition products (SiHCl and/or SiCl2). We were unable to irrevers...

RASMUS HELLER1,2,∗, PETER FRANDSEN1, ELINE DEIRDRE LORENZEN3,4, AND HANS R. SIEGISMUND1 1Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, DK-2200 Copenhagen N, Denmark; 2Instituto Gulbenkian de Ciência, Rua da Quinta Grande 6, P-2780-156 Oeiras, Portugal; 3Department of Integrative Biology, University of California Berkeley, 1005 Valley Life Sciences Building, Berkeley, CA 94...