| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
hapten hap·ten (hāp'tən)
n.
A substance that is capable of reacting with a specific antibody but cannot induce the formation of antibodies unless bound to a carrier protein or other molecule. Also called incomplete antigen, partial antigen.
hapten
small molecule that stimulates the production of antibody molecules only when conjugated to a larger molecule, called a carrier molecule.
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