Some schools even offer bilingual instruction, typically Spanish and English. But the concept of bilingual education has evolved through the ages, given the immigrant make up of the U.S. The following information covers the basic types of bilingual education and conflicts over how language is used in the classroom.
Gram staining is a type of differential staining in which two types of bacteria are differentiated on the basis of their cell wall either gram positive or gram negative althouâ¦gh all the steps in gram staining are crucial , the most important step the most crucial step in the performance of the Gram staining procedure is the decolorization step ...
In a Gram stain test, Gram-positive bacteria retain the crystal violet dye, while a counterstain (commonly safranin or fuchsine) added after the crystal violet gives all Gram-negative bacteria a red or pink coloring. The Gram stain is almost always the first step in the identification of a bacterial organism.