APOB and myeloid sarcoma: In the patients with MS, the residual parameters also comprised seven indicators of the serum levels of lipids and apoB in VLDL (VLDL3-PL, VLDL2-C, VLDL4-PL, VLDL-C, VLDL4-FC, VLDL-FC, and VLDL-apoB), as well as the ratio indicating the free cholesterol content of LDL subclass 6 (LDL6-FC/LDL6-apoB) and the ratio indicating the cholesterol content of IDL (IDL-C/IDL-apoB) (Figure 5C,D).