Italian to English Science Science (general) Hair loss prevention treatment

Detailed description of human stem cells in terms of hair production. However, this is now describing plant stem cells as I believe they are used in this product to assist with the hair growth. (The asterisk does not seem to relate to any sort of footer or further description).

Nelle pianti a differenza degli esseri umani, le cellule staminali vegetali si trovano in un tessuto biologico chiamato MERISTEMA oppure nei CALS*.

I cannot provide an attempt at this word, but the first of my sentence reads:

Unlike in humans, stem cells in plants are located within biological tissue called the MERISTEM or ...??