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Garrison-Morton-Norman History of Medicine
RYLE, John Alfred (1889 – 1950)

RYLE, John Alfred (1889 – 1950)

1889 – 1950

1 entries in the GMN corpus.

Image source Unknown author Unknown author · Wikipedia Commons · Public domain

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1921 CE

#3544

Studies in gastric secretion. Introduction.

RYLE, John Alfred (1889 – 1950)
RYLE, John Alfred (1889 – 1950)

Ryle’s tube, for obtaining specimens of gastric juice.