Thank you Brian for the informative reply.
I just want to ask one more thing. HPV strains 16 and 18 have 'possible' almost invisible lesions on the skin, is this the same with the oral condition. What kind of lesions do these 16 and 18 HPV cause in the oral cavity? Do you know something about it? Since the growth under my tongue is big, does that mean they are probably not due to 16 and 18?

thanks.

Yuumu