Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Crystals of TcDHFR-TS complexes. The typical dimensions of TcDHFR-TS–C-448–NDP–dUMP crystals (a) were 0.02 × 0.04 × 0.12 mm, while those of TcDHFR-TS–Q-8–NDP–dUMP crystals (b) were 0.05 × 0.05 × 0.10 mm. (c) The TcDHFR-TS–C-448–NDP–dUMP crystals started to crack after 3 d of equilibration.
