0000950129-03-003862 8-K 2 20030731 12 7 20030731 LEXICON GENETICS INC/TX 0001062822 2835 760474169 DE 1231 8-K 34 000-30111 03814799 8800 TECHNOLOGY FOREST PLACE THE WOODLANDS TX 77381 2818633000 8800 TECHNOLOGY FOREST PLACE THE WOODLANDS TX 77381 8-K 1 h07836e8vk.txt LEXICON GENETICS INCORPORATED - JULY 31, 2003 EX-99.1 3 h07836exv99w1.txt PRESS RELEASE DATED JULY 31, 2003