Take 3 or 4 sharpened soft-lead (No. 2 or HB) pencils and a good eraser. Pencils and erasers will not be supplied at the center.

Results:There was no peak-like or valley-like changes appearing while four different kinds of fish Hbs crossing human Hb.

For those players taking compound Chinese herbs in CBA League, It has been shown that the content of HB has no difference, but significantly declined with controls(P>0.05);