I84 protease inhibitor family show significant expansion and functional differentiation in Crassostrea gigas

• WU Qianjiang, 
• LIU Sheng, 
• LU Jiali, 
• FAN Congling, 
• YE Jing, 
• RUAN Ziyan, 
• LIN Zhihua, 
• XUE Qinggang