The n-hexane extract from spearmint (Mentha spicata) leaves was purified via a bioassay-guided fractionation scheme. which was based on the induction of differentiation in a RCM-1 human colon cancer cell line. One of the criteria of a differentiation marker is the formation of ducts determined visually using phase contrast microscopy. the most potent fraction contained piperitenone ox... https://foldlyers.shop/product-category/leather-guitar-straps/