In this task, you are given a sentence. You are expected to write the name of the organism substances in the body mentioned in the input. Although there might be several correct answers, you need to write one of them.
One example: Antisperm antibodies were assessed in the serum samples of 73 men unable to ejaculate naturally and on the sperm cells of 13 of these men.
Solution is here: serum
Explanation: Serum is a substance of the organism and needs to be tagged.

Now, solve this:  For example , they were higher than mean TEQs of 18 . 4 pg TEQ / g lipid in adults ( 40 . 6 years old average ) from South Germany [ 27 ] or 16 . 4 pg TEQ / g lipid from 20 year old Japanese women [ 28 ] or pooled samples from randomly selected males and females 18 - 69 years of age from the Spanish city of Mataro [ 29 ] , which were 12 . 5 and 14 . 7 pg TEQ / g lipid respectively .
Solution:
samples