c("gender: female", "source: second trimester amniotic fluid supernatant")
c("gender: female", "source: second trimester amniotic fluid supernatant")
c("gender: male", "source: second trimester amniotic fluid supernatant")
c("gender: male", "source: second trimester amniotic fluid supernatant")
c("gender: male", "source: second trimester amniotic fluid supernatant")