Mwcws
Secretiad gan bilenni a chwarennau gludiog yw mwcws (o'r Lladin: mucus, sef llysnafedd).
Mae'n cynnwys mwsin, celloedd gwynion y gwaed, dŵr, halwynau anorganig, a chelloedd wedi eu disblisgo.
| Enghraifft o'r canlynol | dosbarth o endidau anatomegol  |
|---|---|
| Math | hylifau corfforol, secretiad, endid anatomegol arbennig |
 Ffeiliau perthnasol ar Gomin Wicimedia | |
Cyfeiriadau
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