Yes, human saliva has been (and still is ) used, as it has a very
effective emzyme in it. In fact a fair amount of work has gone into
creating synthetic spit as the human producer tends to run out doing a
large canvas. Just remember to clear the spit with distilled water.
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Craig Deller
The Deller Conservation Group Ltd
Geneva, Illinois
USA
[log in to unmask] "Conservators make it last longer"
http://home.aol.com/DELLERCON
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