FIGURE 1.

(a) Size distributions of amelogenin in pH 8 solutions at 158 μg/ml by DLS showing peaks at 42 and 204 nm (attributed to clusters of nanospheres) and (b) AFM image of protein solutions mixed with a fixative and dropped onto mica showing individual nanospheres and clusters of nanospheres (see arrow). The fixative method preserves the structures of the nanospheres in solution.