50 Microtomes and Microtome Knives (chap. 4) 



The life of the sharp edge of a good knife can be prolonged if the 

 technician has another knife for the preliminary trimming of paraffin 

 blocks. After undesirable parts of the tissue block have been trimmed 

 away, the good knife can be substituted for the old one, and the re- 

 quired sections collected. 





