Ethanobotany,Ethanobotany herbal drug evaluation, Ethanobotany history Potentiometry principle,reference and indicator electrode Physiology and chemistry of skin and pigmentation PCOD,PCOD problem,PCOD Treatment, PCOD symptoms Sterilization methods in tissue culture[1] 12.pptx Turmeric,Black cohosh,Flax seed sources,name of marker compound and their medicinal uses and health benefits