preferred_name: Conversion of C2 into C2a and C2b (Xenopus tropicalis)
preferred_name_lc: conversion of c2 into c2a and c2b (xenopus tropicalis)
label: Conversion of C2 into C2a and C2b (Xenopus tropicalis)
label_lc: conversion of c2 into c2a and c2b (xenopus tropicalis)