. Biological stains; a handbook on the nature and uses of the dyes employed in the biological laboratory. Stains and staining (Microscopy); Stains and Staining; Dyes. 108 .6- Biological Stains 0 i I I I I I I I I I I I I I t I I 500 540 580 620 660 Fig. 12. Spectral curves of four thiazin dyes: 700 1. Toluidine blue. 2. Azure A. 3. Azure B. 4. Azure C. Azure C is recommended by French (1926b) with orange II and eosin as a tissue stain. Haynes (1926a) finds it possible to obtain equally good results, however, with azure I (probably azure A) if the technic is slightly modified. Later (1
. Biological stains; a handbook on the nature and uses of the dyes employed in the biological laboratory. Stains and staining (Microscopy); Stains and Staining; Dyes. 108 .6- Biological Stains 0 i I I I I I I I I I I I I I t I I 500 540 580 620 660 Fig. 12. Spectral curves of four thiazin dyes: 700 1. Toluidine blue. 2. Azure A. 3. Azure B. 4. Azure C. Azure C is recommended by French (1926b) with orange II and eosin as a tissue stain. Haynes (1926a) finds it possible to obtain equally good results, however, with azure I (probably azure A) if the technic is slightly modified. Later (1927) she reports excellent staining with azure C; but it is still uncertain whether it gives re- sults suflSciently different from thionin on the one hand and azure A on the other to be of decided histological Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Conn, H. J. (Harold Joel), 1886-1975. Geneva, N. Y. , Biotech Publications
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