preferred_name: SL (surrogate light chain) binds IgH to form pre-BCR (Sus scrofa)
preferred_name_lc: sl (surrogate light chain) binds igh to form pre-bcr (sus scrofa)
label: SL (surrogate light chain) binds IgH to form pre-BCR (Sus scrofa)
label_lc: sl (surrogate light chain) binds igh to form pre-bcr (sus scrofa)