pre·cip·i·tin·o·gen 
(prĭ-sĭp′ĭ-tĭnə-jən)
(prĭ-sĭp′ĭ-tĭnə-jən)n.
An antigen that induces the production of a precipitin.
- call of nature
- call on
- callose
- callosity
- callous
- callously
- callousness
- call out
- call-out
- callow
- Calloway
- callowness
- call sign
- call slip
- call (someone's) bluff
- call someone's bluff
- call the shots
- call the shots/tune
- call the tune
- call to account
- call to mind
- call to quarters
- call to task
- call up
- call-up