Table 1. Relative Clotting Activities of... | American Society of Hematology

Table 1.

Relative Clotting Activities of Plasma From Factor IX-Knockout Mice and Normal Mice Using APTT Factor IX Assay

Mice	Average Clotting Activity (%)	Range (%)
Normal^*	100 ± 32†	55-185 (n = 22)
Factor IX-knockout	8.4 ± 1.9^†	5.2-13.1 (n = 19)

APTT factor IX assay was performed as described in the Materials and Methods.

Defined by the clotting activity of 1:5 dilution of pooled normal mouse plasma.

Mean ± SD.