Elektronenmikroskopische Untersuchung am Übergangsepithel der Hausspitzmaus (Crocidura russula)

Summary The structure of the transitional epithelium of the common European white-toothed shrew (Crocidura russula) was examined by ultrathin serialsections. The epithelium consists of basal, intermediate and superficial cells. Basal and intermediate cells remain in contact with the basal lamina, whereas superficial cells have no connexion with the basal lamina.

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Herrn Prof. P. Vogel, Lausanne, danken wir für die Überlassung von Hausspitzmäusen aus seiner Zucht.     

Postnatal decline of (Ca2+ + Mg2+)-activated membrane ATPase in cattle red cells.

Acitivity of membrane bound (Ca2+ + Mg2+)-stimulated ATPase, associated with Ca2+ outward transport, in calf red cells is high at birth and declines with a rate constant of 0.041 d-1 after the 3rd week. The decline parallels the disappearance of fetal hemoglobin.     

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