Data Collection for:

Sheppard et al. (2000) Proc. Natl. Acad. Sci. USA 97 (14), 7802-7807.

Supplemental Material:

The following Supplemental Material is available for this article:

Supplemental Figure 5

Supplemental Figure 6

Supplemental Figure 7

Supplemental Figure 8

Supplemental Figure 9

Supplemental Figure 10