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. 1978 Oct;104(2):175-9.
doi: 10.1111/j.1748-1716.1978.tb06264.x.

Thyrotropin-releasing factor: distribution in neural and gastrointestinal tissues

J Leppäluoto, F Koivusalo, R Kraama

Thyrotropin-releasing factor: distribution in neural and gastrointestinal tissues

J Leppäluoto et al. Acta Physiol Scand. 1978 Oct.

Abstract

Specimens of several rat tissues were purified with methanol extraction, gel filtration and cation exchange chromatography and measured for thyrotropin-releasing factor (TRF) concentration by radioimmunoassay. TRF immunoreactivity of neural tissues (hypothalamus, spinal cord, medulla, cerebrum and cerebellum) and gastrointestinal tissues (pancreas, stomach, duodenum and colon) behaved as synthetic TRF during the purification. This dual distribution suggests that TRF-secreting cells have their origin in the embryonal neuroectoderm.

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