Early in the segment, Lowe quipped that Adele was too young to have to lie about her age. Sessions for the album began when she was 25, though time has moved on. âI was 20 when 19 came out.
Serum (blood) In blood, the serum (/ËsÉªÉrÉm/ or /ËsÉªrÉm/) is the component that is neither a blood cell (serum does not contain white or red blood cells) nor a clotting factor; it is the blood plasma not including the fibrinogens.
Definition of serum for English Language Learners. 1  medical : the part of blood that is like water and that contains substances (called antibodies) that fight disease. 2  medical : serum from an animal's blood that can be added to a person's blood to prevent or cure disease. 3  biology : the watery part of a fluid found in a plant.