1 It is composed of liquid plasma and formed elements. 2  Formed elements include: 3  Erythrocytes, or red blood cells (RBCs). 4  Leukocytes, or white blood cells (WBCs).
Vehicle Identification Numbers (VINs) Vehicle Identification Numbers are unique codes given to each on-road vehicle in the United States. From 1981, each new car is given a standardized 17-digit code, which includes a serial number. Older cars may have VINs too, although they will not follow the standardized formula.
Unlocking Info in the Vehicle Identification Number. Every car or truck since the 1981 model year has a unique 17-digit Vehicle Identification Number (VIN) filled with important details, ranging from its engine type to where it was built. The VIN is like a car's Social Security number.