Regaud's stain

4-phenyl-3-butenoic acid amaea magnifica begotten cochineal extract corporate universities Drimycarpus anacardiifolius external teeth lock washer fishery processing ship genus Althaea hormoned intergrown knot Kolbe-Schmidt synthesis north south axis (n-s axis) photran pseudepipodite roadway reduction ratio stop cut traverse-grinding tray high intensity magnetic separator whipcracks