Development of adrenal chromaffin cells is largely normal in mice lacking the receptor tyrosine kinase c-RetAllmendinger, A.; Stoeckel, E.; Saarma, Mart; Unsicker, K.; Huber, K.Mechanisms of development2003 / 3, p. 299-304https://www.sciencedirect.com/science/article/pii/S0925477302004550