Paper Number
The unique Paper Number assigned to each published
reference in the database. For NCI/NTP bioassays, this is the
Technical Report number.
Following the Paper Number, four symbols can appear
which indicate details of the experiment or TD50
calculation:
- “:” appears for all NCI/NTP bioassays to indicate
that TD50 values have been estimated with full lifetable
data.
- “()” indicates that the standard inclusion criteria
for the CPDB were relaxed for these few positive experiments. The
exposure duration or experiment length was usually one week shorter
than the minimum of 6 months exposure or 12 months experiment
length for rodents that are required for inclusion in the
CPDB.
- “pool” indicates that the analysis uses pooled
controls and that results are also included for matched controls in
the plot. Pooled controls are only used in the CPDB for some early
NCI experiments for which the NCI evaluation of carcinogenicity
used pools because there were only a small number of matched
controls.
- “with step” appears for some recent NTP bioassays.
Results for kidney were reported in the Technical Report for both
the standard histopathology protocol and for results including
additional sections of the kidney.
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