%0 Journal Article %T Comment on "Humic acid-dependent respiratory growth of Methanosarcina acetivorans involves pyrroloquinoline quinone" by Yuanxu Song et al. %A Lovley DR %A Holmes DE %J ISME J %V 18 %N 1 %D 2024 Jan 8 %M 38366259 %F 11.217 %R 10.1093/ismejo/wrae020