Beta transforming growth factors are potential regulators of B lymphopoiesis.

J Exp Med · 1987 · PMC2189649 · PMID 2445887

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The sentences

may be significantno p-value reported

The material seemed to be most closely associated with macrophages and lymphocytes and it may be significant that pre-B cells in that situation are refractory to maturation-inducing agents (4, 36, and Lee, G., unpublished observations).

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.