11325
Characterization of a Xenopus laevis CXC chemokine receptor 4 : implications for hematopoietic cell development in the vertebrate embryo .
 Xenopus laevis CXC chemokine receptor 4
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Xenopus laevis CXC chemokine receptor 4