PGM18 in two German families
PGMl-isoenzymes with a mobil i ty slower than a seem to be very rare (Hopkinson and Harris, 1966; Giblett, 1969; Yunis, 1969). Fami ly studies were impossible till now. We observed two not related German families with the allele PGM~ (Fig. 1). The pedigrees are shown in Fig. 2. The compilation of all findings in these families (Table) gives no evidence for linkage. We found these two families within al together 2200 PGMl-investigations. Our observation confirms the suggestion, t ha t PGM~ is a rare allele of the phosphoglueomntase.
Rare phosphoglucomutase phenotypes
1. PGM phenotypes have been determined by starch‐gel electrophoresis in more than 2000 unrelated ‘ English’ people and several smaller samples from other populations.
Electron dose-rate conversion factors for external exposure of the skin from uniformly deposited activity on the body surface.
Dose-rate conversion factors have been calculated for external exposure of the skin from electrons emitted by sources that are deposited uniformly on the body surface. The dose-rate factors are obtained from electron scaled point kernels developed by Berger (Be71; Be73; Be74). The dose-rate factors are calculated at depths of 4, 8, and 40 mg cm-2 below the body surface as recommended by Whitton (Wh73), and at a depth of 7 mg cm-2 as recommended in ICRP Publication 26 (ICRP77). The dependence of the dose-rate factors at selected depths on the energy of the emitted electrons is displayed. The dose-rate factors for selected radionuclides of potential importance in radiological assessments are tabulated.