0000950129-05-005444 8-K 1 20050516 1.01 20050517 20050517 LEXICON GENETICS INC/TX 0001062822 2835 760474169 DE 1231 8-K 34 000-30111 05837051 8800 TECHNOLOGY FOREST PLACE THE WOODLANDS TX 77381 2818633000 8800 TECHNOLOGY FOREST PLACE THE WOODLANDS TX 77381 8-K 1 h25605e8vk.txt LEXICON GENETICS INC.- MAY 16, 2005