4171
However , coligation of Fc gamma RIIB1 with B cell Ag receptors ( BCR ) inhibits BCR - mediated signaling by a mechanism that may involve recruitment of phosphatases SHP - 1 , SHP - 2 , and the SH2 containing inositol 5 ' phosphatase ( SHIP ) to the phosphorylated Fc gamma RIIB1 immunoreceptor tyrosine - based inhibitory motif .
 GENE: Fc gamma RIIB1; GENE: B cell Ag receptors; GENE: BCR; GENE: BCR; GENE: phosphatases SHP - 1; GENE: SHP - 2; GENE: SH2 containing inositol 5 ' phosphatase; GENE: SHIP; GENE: Fc gamma RIIB1 immunoreceptor tyrosine - based inhibitory motif
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: Fc gamma RIIB1; GENE: B cell Ag receptors; GENE: BCR; GENE: BCR; GENE: phosphatases SHP - 1; GENE: SHP - 2; GENE: SH2 containing inositol 5 ' phosphatase; GENE: SHIP; GENE: Fc gamma RIIB1 immunoreceptor tyrosine - based inhibitory motif