Drew, A H <br/><br/>
Serum cholinesterase (pseudocholinesterase) in Down's syndrome: 1. Phenotype frequencies at the E1 and E2 loci.  [electronic resource] 

 -  Journal of mental deficiency research  Sep 1977 
 - 181-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0022-264X 
<br/><br/><label>Standard No.: </label>10.1111/j.1365-2788.1977.tb00037.x  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Age Factors<br/>Butyrylcholinesterase--blood<br/>Cholinesterases--genetics<br/>Chromosome Mapping<br/>Down Syndrome--enzymology<br/>Female<br/>Gene Frequency<br/>Humans<br/>Male<br/>Maternal Age<br/>Phenotype<br/>Sex Factors