Given our recent finding that the lymph node (LN) can serve as an in vivo factory to generate complex structures like liver, pancreas, and thymus, we investigated whether LN could also support early development and maturation from several mid-embryonic (E14.5/15.5) mouse tissues including brain, thymus, lung, stomach, and intestine. Here we observed brain maturation in LN by showing the emergence of astrocytes with well-developed branching processes. Thymus maturation in LN was monitored by changes in host immune cells. Finally, newly terminally differentiated mucus-producing cells were identified in ectopic tissues generated by transplantation of lung, stomach and intestine in LN. Thus, we speculate the LN offers a unique approach to study the intrinsic and extrinsic differentiation potential of cells and tissues during early development, and provides a new site for bioengineering complex body parts.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4750546PMC
http://dx.doi.org/10.1080/15476278.2014.995509DOI Listing

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