186 



DIVISIONS INDUCED IN LYMPHOCYTES 



persons were tried, and before long hundreds of mitotic 

 figures were induced in lymphocytes, some of which 

 closely resembled the karyokinesis, as described in 

 the diagrams and drawings in well-known books on 

 Cytology. The Altmann's granules, however, always 

 form the chromosomes, 1 the nuclear wall forms the 

 spindle, and the nucleolus forms the centrosomes. 

 Thus: 



1 



4 



8 



10 



1 The chromosomes of lymphocytes do not always appear as definite 

 "rods," but may look as if they were composed of masses of granules. See 

 photos. 



