223 research outputs found
DNA/Histone Ratio in Different Regions of Polytene Chromosomes in the Embryo Suspensor Cells of Phaseolus Coccineus
Get PDFSUMMARYThe DNA/histone ratio was calculated through Feulgen/fast green absorption in different regions of polytene chromosomes in Phaseolus coccineus embryo suspensor cells. A great variability of ratios, related with the structural characteristics of DNA in the different regions, has been found. This seems to indicate that complexes of histone with DNA may depend on changes in DNA metabolic activity. In one and the same cell, and even in one and the same chromosome, different chromosome segments have different DNA/histone ratios.These findings are discussed in relation to some characteristics of polytene chromosomes in Phaseolus suspensor cells
Adjuvant postoperative radiotherapy in rectal cancer: 148 cases treated at Florence University with 8 years median follow-up.
Get PDFCarcinoma del pancreas: ruolo della radioterapia e della sua associazione con la chemioterapia
No full text
- …
