Can you solve this riddle?
I am of Greek descent.
I have four siblings who are also famous.
I was born in the ER.
I may not be big, but I have a big job to do.
I am not fat, but my friends are.
I am not a taxi or Uber driver…
I like juice.
(These clues may sound random, but they will make a lot of sense once the answer is revealed!)
I transport my friends into the lymph.