myonase Gene mast cell protease 4 MMCP-4B protein coding gene - Mcp4 MMCP-4A Mcp-4 http://identifiers.org/mgd/MGI:96940 Mcpt4 MGI:96940 MMCP-4 myonase|Mcp-4|Mcp4|MMCP-4|MMCP-4A|MMCP-4B genetic mapping O