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.

 As expected , serum PCBs , specifically PCB 118 , were strongly associated with both sum of dioxin - like compounds and sum of dioxin TEQs .
serum

 The adjuvant effect of PSP on OVA - specific IgE and IgG2a responses in different strains of mice Levels of serum OVA - specific IgE ( A ) and IgG2a ( B ) on day 26 after injection into one hind footpad of HBSS ( open columns ) , 10 mug OVA ( gray ) , 40 mug PSP ( hatched ) or 10 mug OVA + 40 mug PSP ( black ) in different mouse strains .
serum

 In addition rubella virus was isolated from breast milk MNCs in one individual at nine months postvaccination and from peripheral blood MNCs in two of four breast - fed infants studied at 12 - 18 months of age .

blood