382643.fig.003a
(a)
382643.fig.003b
(b)
382643.fig.003c
(c)
Figure 3: (a) Changes in blood urea levels in earthed ( ) and unearthed (A1 + B1) subjects during the first and second weeks of the experiment. (b) Changes in blood urea levels in earthed subjects in the first week of the experiment and unearthed subjects in the second week of the experiment (A1). * between the groups. (c) Changes in blood urea levels in unearthed subjects (B1) in the first week of the experiment and earthed subjects in the second week of the experiment . * between the groups.