We also estimated exposures with estrogenic PCB congeners
52, 70, 95, 99, 101, 110, and 153), and with PCB-105, an antiestrogenic congener
(Cooke et al.
For each individual PCDD, PCDF, and DL-PCB congener
, we calculated the BMC (Crump 1995) for thyroid volume and [FT.
To retain unique individual results, liver, adipose, and plasma samples were not pooled within the same treatment group of one congener
, but between similar exposure levels of TCDD, PeCDD, 4-PeCDF, and PCB-126 or PCB-118, PCB-156, and PCB-153.
has been found in sediment and in fish and human tissue, including children's brain tissue.
f) Percentage of samples with at least one congener
above the limit of detection.
Robust data regarding ongoing congener
intake rates were not available, so the elimination rates were first calculated based on net rate of change of the congeners
, which reflects both intrinsic elimination rates and unmeasured intake rates, termed "apparent" elimination rates.
2006)], the presence of higher concentrations of this congener
in breast milk samples indicates recent exposure of the mothers of our study population, unless continuous exposure sources and habits are assumed.
Comparison of proposed frameworks for grouping polychlorinated biphenyl congener
data applied to a case-control pilot study of prostate cancer.
Detection limits varied by congener
and sample but represented a minor contribution to total dioxin concentration.
profile showed an entirely different pattern between Kohtla-Jarve oil shale processing, city, and Muuga Port oil terminal samples (Fig.
Such differences in morphology and reproductive patterns between flowering congeners
have been argued to facilitate co-existence by reducing or eliminating the competitive advantage of one congener
over the other (Brown et al.
This new information demonstrates 2,3,7,8 TCDD, the most toxic dioxin congener
and one recognized as a carcinogen by the International Agency for Research on Cancer, is in fact present on the plant site, a fact previously unknown and unreported, although we reported this congener
in the two sediment samples adjacent to the plant outfall in our original report.
The Kornbrust study of DDE and lactation in rodents used pure p, p-DDE, the most prevalent congener
but also the least estrogenic one (5).
1])  and SRM 2275 (PCB Congener
Solution-II in Isooctane) .
A third PBDE formulation, based on the fully brominated, or deca, congener
known as BDE-209 isn't slated for a phaseout anywhere.