6074
Although both Ldb1 and Ldb2 mRNA were produced in the developing and adult pancreas , immunohistochemical analysis illustrated a broad Ldb1 protein expression pattern during early pancreatogenesis , which subsequently became enriched in islet and ductal cells perinatally .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None