average values of the molecular weight of hyaluronic acid varied with age in three phases : 39 x 10 ( 4 ) in fetuses and up to the age of one week , 55 x 10 ( 4 ) in individuals aged to 26 weeks and 87 x 10 ( 4 ) in individuals 52 weeks of age .
C0015965
fetuses
C0027361
individuals