Complex sentence: Human CD68 is a transmembrane glycoprotein, heavily glycosylated in its extracellular domain, with a molecular weight is 110 kD; it's primary sequence consists of 354 amino acids with predicted molecular weight of 37.4 kD if it were not glycosylated.
Split into simpler sentences: Human CD68 is a transmembrane glycoprotein, heavily glycosylated in its extracellular domain, with a molecular weight of 110 kD. Its primary sequence consists of 354 amino acids with predicted molecular weight of 37.4 kD if it were not glycosylated.