This preparation, then, which is produced entirely by diffusion, presents a perfect resemblance to the achromatin spindle in karyokinesis.
"The Mechanism of Life"
Stéphane Leduc
With regard to the achromatin spindle, Professor Hartog has shown that the two poles of the spindle are of the same sign, and not of opposite signs as was at first supposed.
"The Mechanism of Life"
Stéphane Leduc