Tumilowicz, Joseph J. (Children's Hospital of Philadelphia, Philadelphia, Pa.), and Klaus Hummeler. Heterogeneity of apparently complete poliovirus particles. J. Bacteriol. 87:1105-1113. 1964.-A chromatographic procedure was developed for separating the N from the H complement-fixing antigen of poliovirus. This procedure concomitantly effected some separation of classes of N particle. The ratio...

Diastolic murmurs have always been considered abnormal, but this report presents nine apparently normal children with high-frequency, early, diamond-shaped diastolic murmurs confirmed by intracavitary phonocardiography to arise within the left ventricle. Each child (aged 5 to 15 years) was referred for evaluation of a systolic murmur at the lower left sternal border, but an additional finding a...

ago. Present confinement.?The membranes ruptured with the onset of labour and it was decided to apply forceps on account of primary uterine inertia which was contributed to by a cicatrical contraction in the vaginal canal about two inches above the vulva. Under chloroform ana;sthesia this was manually dilated and as forceps were being applied the patient suddenly stopped breathing. The forceps ...

OBJECTIVE To determine the prevalence of cardiomyopathy and the relationship between cardiomyopathy and heart murmurs in apparently healthy cats. DESIGN Cross-sectional study. ANIMALS 103 privately owned, apparently healthy domestic cats. PROCEDURES Cats were physically and echocardiographically examined by 2 investigators independently. Left ventricular wall thickness was determined via ...

Serum ferritin levels were estimated in 78 normal subjects (46 males and 37 females) using radioimmunoassay techniques. The mean serum ferritin level in normal men was 83 ng/ml (range 7.4 190.0 ng/ml), compared with 43 ng/ml (range 5.1 — 104 ng/mI) in normal women. The difference in the mean ferritin level between the two sexes was significant. A concentration below 10 ng/mI was associated with...

Within-genome gene duplication is generally considered the source of extra copies when higher dosage is required and a starting point for evolution of new function. A new study suggests that horizontal gene transfer can appear to play both roles.

OBJECTIVE To examine sporadic cases of primary pulmonary hypertension of coancestry. DESIGN An epidemiologic study of families of patients with primary pulmonary hypertension. SETTING A university-affiliated referral population. PARTICIPANTS Family members of 13 patients with primary pulmonary hypertension. MEASUREMENTS Family pedigrees involving grandparents, parents, siblings, and chi...