progressive staining

pro·gress·ive stain·ing

a procedure in which staining is continued until the desired intensity of coloring of tissue elements is attained.

pro·gres·sive stain·ing

(prŏ-gres'iv stān'ing)
A procedure in which staining is continued until the desired intensity of coloring of tissue elements is attained.
References in periodicals archive ?
In our study, we also observed progressive staining percentages in grade I versus grades II through IV (Figure 2, B and C; Table 2).
A gradual and progressive staining of fibrin due to the vital reaction was observed, which depended on the reaction time.
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