Title Callus Induction, Shoot and Root Regeneration in Hyssopus officinalis using Sodium Nitroprusside and Plant Growth Regulators Type Article Keywords Callus Induction, Shoot and Root Regeneration in Hyssopus officinalis using Sodium Nitroprusside and Plant Growth Regulators Abstract Callus Induction, Shoot and Root Regeneration in Hyssopus officinalis using Sodium Nitroprusside and Plant Growth Regulators Researchers Mohammad Sadat-Hosseini (First researcher)Amanollah Soleimani (Second researcher)