PT  - JOURNAL ARTICLE
AU  - Ellison, Aaron M.
TI  - Howard Hughes Institute
AID  - 10.1126/science.639-c
DP  - 1988 Aug 05
TA  - Science
PG  - 639--640
VI  - 241
IP  - 4866
4099  - http://science.sciencemag.org/content/241/4866/639.4.short
4100  - http://science.sciencemag.org/content/241/4866/639.4.full
SO  - Science1988 Aug 05; 241