Assertion: t lymphocyte | /r/CapableOf | progress through stage
Facets:
value: under the regulation of cytokines
type: OTHER
Source sentences:
text: Lymphoid progenitor cells migrate from the bone marrow to the thymic cortex, where, under the regulation of cytokines produced by thymic epithelial cells, they progress through stages known as pro-T, pre-T, and immature T cells.