Frequency modulation of transmitter release.

In 1952 Fatt and Katz recorded at a frog neuromuscular junction while stimulating the nerve and found "...

[Heptaminol hydrochloride as an epithelium transporter].

Electrophysiological and transport effects induced by heptaminol hydrochloride were studied in frog epithelium. This tissue, which can easily be maintained in vitro, is a valuable model for studying sodium active transport with hormone-dependent characteristics that reproduce mammalian nephron behavior (notably in areas with tight gap junctions). The two following techniques were used: the Ussing short-circuit current method and the swept-frequency impedance measurement method.

[A critical study of the relations between superficial or profound electrical potentials and regeneration in vertebrates (author's transl)].

It has been claimed that the action of the central and peripheral nervous systems on the regeneration process could be mediated through an electrical field which can be detected at the superficial limit of the animal tested. In this paper, it is demonstrated that superficial d. c.

[Origin of the differences of superficial potentials in Rana esculenta].

The spatial distributions of superficial D.C. potentials on the skin of Rana esculenta have been compared to those of the intensity of short-circuit current (S.