research Mechanism of action of minoxidil sulfate-induced vasodilation: a role for increased K+ permeability. 48 citations , June 1988 in “PubMed” Minoxidil sulfate relaxes muscle by increasing potassium flow, making it a unique muscle relaxer.
research Root and Root Hair Growth in Relation to Supply and Internal Mobility of Calcium 18 citations , March 1972 in “Botanical Gazette” Minimal calcium is enough for root hair growth if roots avoid toxic ions.