In Gram's method, however, only some bacteria retain the stain, while others lose it.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2" by Various
From the resulting growths make cover-slip preparations and stain carbolic methylene-blue, Neisser's method, Gram's method.
"The Elements of Bacteriological Technique" by John William Henry Eyre
Young individuals are stained by Gram's method; older individuals are, however, Gram negative.
"The Bacillus of Long Life" by Loudon Douglas
It stains with moderate rapidity with the ordinary anilin dyes, and is decolorized by Gram's method.
"Contagious Abortion of Cows" by Ward J. MacNeal