| CPC G01N 1/30 (2013.01) [G01N 1/28 (2013.01); G01N 33/48 (2013.01); G01N 33/4833 (2013.01)] | 11 Claims |

|
1. A method comprising
preparing a light-transmitting biological material by permeating an aqueous solution into a biological material, wherein the aqueous solution comprises at least one compound selected from the group consisting of benzylamine, 2,3-dimethyl-1-phenyl-5-pyrazolone, xylazine hydrochloride, 2-amino-6-methylpyridine, 2-methylpyridine N-oxide, S-[2-(dimethylamino)ethyl]isothiourea dihydrochloride, diphenhydramine hydrochloride, benzyldimethylphenylammonium chloride, DL-phenylephrine hydrochloride, 4-methylpyridine N-oxide, N-methylnicotinamide, tolperisone hydrochloride, bis(2-dimethylaminoethyl)disulfide dihydrochloride, 3-picolylamine, neostigmine bromide, hydrazine carbonate, N,N-dimethylbenzamide, N-benzylethanolamine, benzyltributylammonium chloride, 1,5-diazabicyclo[4.3.0]-5-nonene, N-(2-aminoethyl)piperazine, N,N-diethylnicotinamide, and pyridine N-oxide.
|