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.

[EX Q]:  ( B ) Real - time PCR was performed on total RNA samples from the human brain regions known to express MOR1 .
[EX A]: samples

[EX Q]:  Therefore , when CoNS or Streptococcus spp . were detected by blood culture and SeptiFast analysis , the following criteria were applied to define whether these strains represented a pathogenic infection : ( 1 ) Tests were performed at least twice within 48 hours before and after CoNS were detected by blood culture or SeptiFast analysis ; ( 2 ) CoNS or Streptococcus spp . were detected in two different blood culture tests that were separately performed twice within 48 hours ; and , ( 3 ) CoNS or Streptococcus spp . were detected twice or more in tests that were performed three times [ 11 - 15 ] .
[EX A]: blood

[EX Q]:  On the contrary , the administration of 5 - CT induces a rise in IOP , which is partly or entirely caused by an increase in aqueous humor secretion mediated by 5 - HT7 receptors [ 84 ] .
[EX A]:
humor