An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Matthews KA, Miller DF, Kaufman TC.Matthews KA, et al. Among authors: kaufman tc.Dev Biol. 1990 Jan;137(1):171-83. doi: 10.1016/0012-1606(90)90018-e.Dev Biol. 1990.PMID: 2295363
Matthews KA, Miller DF, Kaufman TC.Matthews KA, et al. Among authors: kaufman tc.Dev Biol. 1989 Mar;132(1):45-61. doi: 10.1016/0012-1606(89)90203-0.Dev Biol. 1989.PMID: 2492961
Popadić A, Abzhanov A, Rusch D, Kaufman TC.Popadić A, et al. Among authors: kaufman tc.Int J Dev Biol. 1998;42(3):453-61.Int J Dev Biol. 1998.PMID: 9654031Review.