1721
Whole - mount in situ hybridization to early mouse embryos of 9 . 5 - 10 . 5 days indicated a complex pattern of Arp1 expression spatially overlapping with the expression of All1 .
 GENE: Arp1; GENE: All1
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: Arp1; GENE: All1