Table 1.

Immunolocalization of an MPO-like protein in the light organ of E. scolopes

Squid tissue*	Antibody cross-reactivity†		P value‡
	Immune	Nonimmune
Epithelial (E)‡	27.8  ±  7.1	7.2  ±  3.4	<0.005
Ciliated duct (D)	30.5  ±  9.6	11.2  ±  5.1	<0.05
Lens (L)	10.5  ±  3.6	15.6  ±  4.3	>0.1
Reflector (R)	2.3  ±  1.2	3.4  ±  1.6	>0.1

^*Letters in parentheses corresponding to tissue types labeled in Fig. 1. 

^†Number of immunogold spheres bound per 4 μm² of tissue sections treated with either immune (containing anti-human MPO antibody) or nonimmune serum. 

^‡Results of two-tailed t tests comparing immune and nonimmune values.