transmembrane 4 L six family member 20 (TM4SF20) 抗体 transmembrane 4 L six family member 20 (Tm4sf20) 抗体 transmembrane 4 L six family member 20 L homeolog (tm4sf20.L) 抗体 transmembrane 4 L six family member 20 (tm4sf20) 抗体 1810018L02Rik 抗体 pro994 抗体 PRO994 抗体 tcce518 抗体 TCCE518 抗体