Table 1. The exact composition of incubation solution for the visualization of specific AChE, according to El Badawi and Schenk.²⁹ .

Acetylthiocholine iodide	12.5 mg
Distilled water	2.0 mL
0.82% Sodium acetate	15.8 mL
0.6% Acetic acid	0.5 mL
2.94% Sodium citrate	1.2 mL
0.75% Copper sulphate	2.5 mL
0.137% Tetraisopropylpyrophosphoramide	0.5 mL
0.175% Potassium ferrocyanide	2.5 mL