Long chain alkyl diols (LCDs) are lipids consisting of linear even-numbered (28,30,32) alkyl chains with an alcohol group at the primary carbon atom and one at a midchain carbon position (13, 14,15). Who mainly make C28 & C39 1,14-diols (saturated and monounsaturated) and who mainly makes saturated C28-32 1,13- & 1,15-diols?