Table 1.

Percentage of caveolin and G_iα immunogold localized to invaginated caveolae of fibroblasts

Antibodies	No. of invaginated caveolae		Caveolae with gold (%)
	With Gold	Total
Caveolin	222–241	223–244	99–100
Giα
B087	26–70	346–395	7–18
A569	26–42	200–213	13–20

The quantification is presented as the range obtained by two investigators who independently identified invaginated caveolae (such as those designated by closed arrows in Figure 7) and counted gold particles within 10 nm of these structures. Prints from 25 micrographs were used for counting (six for caveolin, ten for B087, and nine for A569 antibodies).