Very interesting and educational (definitely for me) discussion. The only
familiarity I have with the term is from the dairy industry where a milking
machine might "slip" from one or more teats and cause a negative vacuum.
It's then possible for milk droplets or bacteria to be propelled toward and
possibly into the teat, increasing the risk of mastitis in the cow. I poked
around on the web and found this site which has reams of info about mastits
in the dairy cow. Click on "nmc publications" to get a listing of info
sheets. This is the National Mastits Council website. Big bucks in the
dairy industry.
http://www.nmconline.org/home.htm

Donna Hansen
Burnaby (next to Vancouver), British Columbia
Canada
the daffodils are blooming, it's nice and sunny, I'm so glad we moved out
of Ontario
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