The only cross-breeding that went on was through natural weather, cross-bred by pollen spread by the natural winds of the world, without any intentional cross-breeding involved.
Medical cannabis in the treatment of cancer pain and spastic conditions and options of drug delivery in clinical practice
The use of cannabis for medical purposes has been recently legalised in many countries including the Czech Republic. As a result, there is increased interest on the part of physicians and patients in many aspects of its application. This mini review briefly covers the main active substances of the cannabis plant and mechanisms of action.