[Spontaneous chromosomal instability in the rare hereditary diseases: Fanconi's anemia and Bloom's syndrome].

Abnormalities, Multiple/genetics Anemia, Aplastic/genetics Chromatids Chromosome Aberrations/blood Chromosome Disorders Chromosomes, Human, 1-3 Chromosomes, Human, 16-18 Chromosomes, Human, 19-20 Dwarfism/genetics Erythema/genetics Facial Dermatoses/genetics Humans Karyotyping Lymphocytes/analysis Photosensitivity Disorders/genetics Syndrome Telangiectasis/congenital