_:B734d79a7X3A195d1e795f5X3AX2D1409 . _:B734d79a7X3A195d1e795f5X3AX2D1409 "*sero‑" . "PIt" . "?" . _:B734d79a7X3A195d1e795f5X3AX2D1409 . "Etymology for: serum (la1500)" . "*sero‑ [n.]" . "*sero‑" . .