AFB Acid Fast Bacteria control slides consist of formalin fixed, paraffin embedded tissue sections which contain known distinctive tissue elements. Use these slides with confidence to evaluate stain quality and performance in histology laboratories. StatLab control slides are created using Millennia adhesion white glass slides with 90 degree corners. Each package includes specific staining protocol. 25/package. Includes 25 Unstained slides Tissue: Known positive Special Stain or Antibody: AFB Acid Fast Bacillus