the quality of mucous

can anyone tell me, is mucous the same size in children as it is in adults? i mean the little molecules inside mucous. if the organ or whatever it is that makes mucous is smaller, then surely the stuff that comes out of it is smaller? i don't mean the quantity, i mean that which makes up mucous.

if you know the answer to this, then please let me know. maybe it depends on where the moon is in the sky.