Does Parmigiano-Reggiano have animal or vegetable rennet? If yes, what is a good alternative with vegetable rennet? Thanks.

I really love cheese but it is a no no on the diet I'm on

Cheesaholics Anonymous: Can vegetarians eat cheese? (http://cheesaholics.blogs.com/cheesaholics_anonymous/2006/02/cheesaholics_an_3.html)

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