PRESERVATION OF PHENYL-PHOSPHATASE ACTIVITY DURING PARAFFIN EMBEDDING

Stabilization and preservation of serum prostatic acid phosphatase activity.

The effects of pH and temperature of storage on the stability of the prostatic fraction of serum acid phosphataseactivity have been studied in order to providea satisfactory method for the preservation of activity in serumsshipped from other hospitals.Addition of citrate tablets of a composition to buffer the serums at pH 6.2 was found to preserve the original activity at 25#{176} for at least ...

A Rapid Method of Paraffin Embedding

Effects of formalin fixation, paraffin embedding, and time of storage on DNA preservation in brain tissue: a BrainNet Europe study.

There is a large amount of tissue stored in brain collections and brain banks, but little is known about whether formalin-fixed tissues and paraffin blocks stored for years in brain banks are suitable for the retrospective genetic studies. The study was carried out in order to: (i) compare DNA preservation in frozen, formalin-fixed and paraffin-embedded tissues stored for different periods; (ii...

Diagnosis of hairy-cell leukaemia by tartrate-resistant acid phosphatase activity in paraffin-embedded tissue sections.

Tartrate-resistant acid phosphatase activity may be demonstrated in paraffin-embedded liver and spleen specimens as well as in decalcified bone marrow biopsies after fixation in a mixed glutaraldehyde-formaldehyde-calcium acetate solution. This technique may routinely be applied to haematologically relevant material and aids in the differential diagnosis of hairy-cell leukaemia.

Use of liquid paraffin in the preservation of pathological specimens.