Abstract: In a transdermal cell, a matter volume-adjustment male device includes the lower opening end of the through-space structure having inner wall female threads mateable with first male threads of a screwable matter volume-adjustment male member alternately adjustable upwardly and downwardly between opposite upper and lower female threads-termination points. The screwable matter volume-adjustment member has opposite first upper and lower male threads-termination points, and the inner wall female threads are further concurrently mateable with a bottom closure member having second male threads having opposite second upper and lower male threads-termination points.