decalcification in EDTA and acid

Hi histonetters
i need your help 
i put some teeth in EDTA for decalcification for two months, and then to accelerate decalcification: I put them in acid nitric 5% for four weeks, i embedded them in paraffine, teeth are too yelow now, and too hard, what do you think about this, could you give me some advice, or any protocole please 
thank you very much in advance
Myriam Baali

<< Previous Message | Next Message >>