It looks like your request for "proper paper: 'mature female muscle'" could refer to a few different things depending on what you're looking for.
To make sure I give you exactly what you need, could you clarify which of these you were interested in? mature female muscle
: Are you looking for academic studies on muscle physiology , aging (sarcopenia) , or lipid dynamics in mature females (either human or in marine biology, like the Gulf Menhaden study )? It looks like your request for "proper paper: