Conclusion
The results of this investigation show decisively that, in the growing root, lead retards cell proliferation while allowing cell growth in size to proceed unrestricted.
To Miss Elizabeth S. Justice is due the credit for the preparations from which this study was made.
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References
Hammett, F. S., Studies in the biology of metals. II. The retardative influence of lead on root growth. Protoplasma IV, 187–191, 1928.
Hammett, F. S., Studies in the biology of metals. III. The localization of lead within the cell of the growing root. Protoplasma V, 135–141, 1928.
Hammett, F. S., A convenient device for plant solution culture work. Science67, 106–107, 1928.
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Hammett, F.S. Studies in the biology of metals. Protoplasma 5, 535–542 (1928). https://doi.org/10.1007/BF01604618
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DOI: https://doi.org/10.1007/BF01604618