9011
It has been demonstrated previously that Pax - 6 , a paired domain ( PD ) / homeodomain ( HD ) transcription factor critical for eye development , contributes to the activation of the alphaB - , alphaA - , delta1 - , and zeta - crystallin genes in the lens .
 Pax - 6, paired domain, PD, homeodomain, HD, alphaB - , alphaA - , delta1 - , and zeta - crystallin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Pax - 6, paired domain, PD, homeodomain, HD, alphaB - , alphaA - , delta1 - , and zeta - crystallin