collection and provides advice on the acquisition of cell lines. 



Cell cultures are listed alphabetically under cell type and 

 biochemical or morphological abnormalities including the genetic 

 mutant (GM) repository number, tissue, passage number, culture 

 medium, submitter, age, sex, race, genetic status, verification 

 and remarks . 



Appreciation is expressed to the many investigators who help 

 the NIGMS Advisory Committee and the Repository staff select repre- 

 sentative subjects and help validate the genetic defects by pro- 

 viding clinical and laboratory data or assays on the cell culture. 



Interested investigators are invited to utilize the 

 Repository as a source of genetic mutant cell cultures. 



Lewis L. Coriell, M.D., Ph.D. 



Arthur E. Greene, D. Sc. 



