Table 2. Two-way ANOVA of EDX elemental composition: p values adjusted for multiple comparison.

Element	B-Control vs. G-Control	B-Control vs. B-AA	B-AA vs. W-AA	G-Control vs. W-AA
C	0.94	0.06	<0.0001	<0.0001
N	0.28	0.56	0.0015	<0.0001
O	0.14	0.06	<0.0001	<0.0001
S	0.99	1.00	<0.0001	<0.0001
Fe	0.66	0.54	0.0004	0.0008
Cu	0.06	0.16	<0.0001	<0.0001
Zn	0.68	0.99	<0.0001	<0.0001