Irradiation with ultraviolet light (254 nm) or ionizing radiation can prolong oral regeneration in the ciliate Stentor coeruleus. The primary response is an interruption in the regeneration cycle, starting soon after irradiation and leading to a delay in the completion of development. The relation o
The Effects of Colchicine and Colcemid on Oral Differentiation inStentor coeruleus*†
✍ Scribed by HAIGHT, JOHN M. ;BURCHILL, BROWER R.
- Book ID
- 109246637
- Publisher
- Wiley (Blackwell Publishing)
- Year
- 1970
- Tongue
- English
- Weight
- 669 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0022-3921
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Continuous exposure to a high concentration of actinomycin D (250 pg/ml) completely inhibits oral regeneration in amputated tail pieces of Stentor coeruleus. Once oral regeneration is initiated, the same concentration of actinomycin D no longer inhibits normal regeneration. Concentrations of actinom
## Abstract The effect of colchicine and colcemid (1 × 10^−6^ M) on the blastogenic response of human lymphocytes to concanavalin A was studied __in vitro__ by three different methods. (a) Measurement of [^3^H]thymidine ([^3^H]dThd) incorporation which was strongly suppressed by the drugs. (b) Volu
The ciliate protozoan Stentor coeruleus performs a neat and localized act of cytoplasmic differentiation when it produces a new set of feeding organelles during division, regeneration, and reorganization. On the side of the cell appears a primordium which becomes visibly longer and more complex as i