由

よし

reason, significance, cause

因

いん

hetu (direct cause, esp. as opposed to indirect conditions)

血小板由来増殖因子

けつしょーばんゆらいぞーしょくいんし

Platelet Derived Growth Factor

脳由来神経栄養因子

のーゆらいしんけーえーよーいんし

Brain Derived Neurotrophic Factor

因果因縁

いんがいんねん

cause and effect, karma, retribution, an evil cause producing an evil effect

候由

そうろうよし こうゆかり

I hear that...

縁由

えんゆ えんゆう

connection, relationship

理由

りゆう わけ

reason, pretext, motive

事由

じゆう

reason, cause

由縁

ゆえん

acquaintance, relation, affinity, reason

由緒

ゆいしょ

history, pedigree, lineage

原由

げんゆう

reason, cause

自由

じゆう

freedom, liberty, as it pleases you

経由

けいゆ けいゆう

through, by way of, via

由来

ゆらい

origin, source, history, derivation, reason, destiny

来由

らいゆ

origin, cause

率由

following (a precedent, former example, etc.)

血管内皮由来弛緩因子

けっかんないひゆらいしかんいんし

Endothelium Dependent Relaxing Factors

素因

そいん

basic factor