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.
What 17 Numbers and Letters Can Tell You About Your Car. A Vehicle Identification Number (VIN) is the string of 17 numbers and letters that an automobile manufacturer assigns to an individual vehicle. The VIN can reveal a number of things about a car, including its airbag type, country of origin, engine size, model year and trim level. The VIN also is key to car safety.