CD19 is present in both normal and malignant B-cells and has long been considered to be the most reliable surface marker of this lineage over a wide range of maturational stages. In normal lymphoid tissue, CD19 is observed in germinal centers, mantle zone cells, and scattered cells in the interfollicular areas. Anti-CD19 exhibits an overall immunoreactivity pattern similar to those of the antibodies against CD20 and CD22. However, in contrast to CD20, CD19 is also expressed in immature B-cells; although recent studies have described CD19 loss in a few B-cell neoplasms.

Solution in Tris Buffer, pH 7.3-7.7, with 1% BSA and <0.1% Sodium Azide

Download the IFU specific to your product lot and formatNote: This requires a keycode which can be found on your packaging or product label.

CD19 Positive Control Slides, Product No. 119S, are available for immunohistochemistry (formalin-fixed, paraffin-embedded sections).

For Technical Service please contact: 800-665-7284 or email: service@cellmarque.com

Cell Marque is a registered trademark of Merck KGaA, Darmstadt, Germany