【法】 lineal descent
frank; just; straight; vertical
【医】 recto-
attach; fasten; tie; corollary; series; system; department; feel anxious
relate to
【计】 Coset
【医】 series; system; systema
【经】 ratio control
blood relationship; bloodline; blood; descent; lineage; parentage; pedigree
【医】 descent; genealogy; line blood