J Med Food Plants 1(1):7-9. 2009.   
Mutagenicity test of Morinda citrifolia (noni) leaves. 
West BJ.

Noni leaf extract was not mutagenic in the Ames assay, demonstrating that the leaf poses no significant genotoxic risk to humans. (original abstract available at http://connection.ebscohost.com/c/articles/59352328/mutagenicity-test-morinda-citrifolia-noni-leaves).