Table 1.

Values (loadings) in the first four PCAs for each of the 18 variables assessed in adult individuals before Cu supplementation.

Variables	PC1	PC2	PC3	PC4
Hemoglobin	0.104	0.049	−0.184	−0.018
Ferritin	1.347	0.077	−2.606	1.396
Homocysteine	0.127	−0.104	−0.177	−0.719
Serum Cu	−0.003	0.418	0.917	−0.300
Serum Fe	0.169	0.578	−0.365	−0.397
Serum Zn	−0.003	0.002	−0.086	0.247
Cu in MNC	−0.005	−0.066	0.130	0.075
Fe in MNC	−0.013	−0.143	0.128	−0.294
Zn in MNC	0.017	−0.099	−0.023	−0.105
GOT	0.542	−0.437	1.328	0.929
GPT	0.945	−1.187	1.111	1.372
GGT	1.680	0.659	1.342	−1.571
SOD	0.223	0.264	0.395	1.491
DMPS	0.261	2.124	−0.240	0.025
DMPS 0–4 hr	−0.333	0.502	0.782	2.621
DMPS 5–24 hr	−0.052	0.830	0.619	−0.217
DMPS 0–24 hr	−0.318	1.199	0.443	1.185
Urinary Cu	0.058	0.648	0.038	0.297
Percent variance explained	29.08	18.11	12.8	9.650

Value for DMPS is Cu excreted during the indicated time period after administration of 300 mg DMPS.