Table 1.

Specific binding of MSH microspheres and macrospheres to various cells

Cell lines	Binding
Epidermal melanocytes (human)	+
Keratinocytes (human)	+
Melanoma
B16 (mouse, positive control)	+
HD (human, melanotic)	+
VS (human, amelanotic)	+
A375P (human, melanotic)	+
A375M (human, melanotic)	+
C8161 (human, amelanotic)	+
Breast cancer cell MCF-7 (human negative control)	−
Small cell lung cancer (NC1-N592)	−

A + indicates visualization of cells bound to the beads (19, 20); − indicates complete lack of beads bound to any of the cells.