new paper on tip cell specification

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We just published a new paper on the mechanism of tip cell specification in the tracheal system. There are two types of specialized cells at the tips of tracheal branches, and the transcriptional repressor Aop plays a key role in selecting the proper tip cell type for each tracheal branch. Check it out at

http://dev.biologists.org/content/140/6/1240.abstract

Best,

Stefan

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