Assertion: tonsil's removal | /r/CapableOf | enter upon partial or complete regression
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Source sentences:
text: It Was his belief that accumulations of lymphocytes outside of lymphatic nodes and lymphatic and blood Vessels are agents of resorptive processes utilized in the removal of structures which have entered upon a partial or complete regression and illustrated by the collections of lymphocytes in degenerating organs, such as the pronephros of lower vertebrates, gills of Anura, thymus, vermiform process, and palatine tonsils; the last were then believed to be derived from the ‘degenerating’ second pharyngeal pouch.