Zein
Usage examples for Zein:
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Animals fed on the zein mixture died in a few days but the inexplicable thing was that when the missing tryptophan was added to the diet the animals lived a little longer but finally declined and died.
"The Vitamine Manual" – Walter H. Eddy -
1886. 10. Alaeddin and Zein ul Asnam.
"The Life of Sir Richard Burton" – Thomas Wright