hap·ten 
(hăptĕn′) also hap·tene (-tēn′)
(hăptĕn′) also hap·tene (-tēn′)n.
A small molecule that reacts with a specific antibody but does not induce an immune response unless bound to a larger molecule, usually a protein.
[German : Greek haptein, to fasten + German -en, noun suffix (from Greek -ēnē, -ene).]
hap·tenic adj.
- inferential
- inferentially
- inferior
- inferior cerebellar peduncle
- inferior conjunction
- inferiority
- inferiority complex
- inferiorly
- inferior planet
- infernal
- infernally
- infernal machine
- inferno
- inferrer
- infertile
- infertility
- infest
- infestation
- infibulate
- infibulation
- infidel
- infidelity
- infield
- infielder
- infighter