Abstract
Two repetitive elements of the chicken CR1 family, each located in the 5′ flanking region of the avidin-related genes Aur4 and Avr5, have been cloned and sequenced. Both elements are 721 by in length with 72% identity to a CR1 consensus sequence. They had a 191 bp deletion in a region corresponding to the functional silencer regions previously detected within the CR1 elements upstream of the chicken lysozyme and apo VLDLII genes.
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