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. 1991 Jan;143(1):206-11.
doi: 10.1016/0012-1606(91)90068-e.

Endoderm-specific expression of the Drosophila mex1 gene

R A Schulz  1 , X Xie, A J Andres, S Galewsky
Affiliations

Endoderm-specific expression of the Drosophila mex1 gene

R A Schulz et al. Dev Biol. 1991 Jan.

Abstract

The Drosophila mex1 gene is one of several genes clustered within a 10-kb interval of polytene region 71CD that includes the ecdysone-regulated Eip28/29 gene. mex1 is expressed in several developmental stages, with gene transcripts accumulating initially in 9- to 12-hr embryos. During embryogenesis, mex1 exhibits an endoderm-specific pattern of expression. mex1 transcripts are first detected in the anterior and posterior midgut primordia of stage 12 embryos; subsequently, mex1 mRNA accumulates solely in the differentiating embryonic midgut. DNA sequence analysis reveals that the mex1 gene encodes an unusual cysteine-rich polypeptide.

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