B J Visseaux-Coletto

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In order to determine reliable histological features characterizing triploidy, the following features were examined and graded by three pathologists on 46 early abortion specimens: hydropic swelling of the villi, cisterns, villous scalloping, trophoblastic hyperplasia with syncytial vacuolization, single cytotrophoblastic cells in villous stroma,(More)
Quinacrine can be used for fluorescence microscopy to visualize certain cell bodies and fibres in the myenteric plexus of the intestine, forming a network different from the cholinergic and adrenergic systems. In the Piebald mouse, animal model of congenital megacolon, the quinacrine positive plexus is thin in the distal narrowed segment and well developed(More)
Silver staining of nucleoli reveals argyrophilic proteins associated with nucleolar organizer region (Ag-NOR) proteins. Argyrophilic components appear as dots about 1 micron in diameter dispersed throughout the nucleolus (Ag-NOR dots). The count of Ag-NOR dots is a useful index for improving the cancer diagnosis and determination of prognosis. Here we(More)
Parallel cytophotometric ploidy studies and cytogenetic analysis were performed on 15 various human solid tumours. The quantification of DNA by image analysis was carried out on cytological imprints of fresh tumours and on smears obtained after cell culture. The results obtained by both sets of calculations were compared with each other and with the(More)
To determine the factors causing spontaneous abortions, 422 consecutive second-trimester abortions and the corresponding clinical data were studied prospectively. All of the fetuses and placentas were referred to a single pathologist and microbiological cultures were carried out in 205 of these cases. One hundred twenty-one medically included abortions were(More)
Four hundred and fifty pairs of adrenals were studied from human fetuses ranging in age from 15 to 27 weeks of gestation (menstrual age). They were collected from spontaneous and medical abortions. The adrenal weight increased from 0.2 to 1.5 g during the second trimester. The left adrenal was significantly heavier than the right for the same gestational(More)
OBJECTIVE To determine if the presence of cells having a DNA content > 5c and occurring at very low frequency is related to breast cancer outcome. STUDY DESIGN Feulgen-stained imprints of fresh tumors used for routine standard DNA image cytometry were reanalyzed, with the aim of detecting hyperploid (> 5c) cells or minor stemlines. Specially adapted(More)
The authors report an anatomico-clinical case (with ultrastructural study) of bronchial anaplastic carcinoma with composite, triple differentiation oat-cell subtype. The patient underwent early surgical excision followed by radiotherapy and chemotherapy. With the help of data from the literature concerning this composite subtype which suggests new theories(More)
There are many ways to analyse and quantify the proliferating activity of a tumor. The different technics are more and more specific of each phase of the cell cycle. This paper firstly describes the basis of each of these technics (mitosis count, DNA staining with various compounds fluorescent or not, incorporation of specific molecules during the phase of(More)
With the new softwares that are available, it is now possible to measure the cellular DNA content on Feulgen stained paraffin sections, without enzymatic dissociation of the samples. The main advantage of this technique is to preserve the cellular histological context and to select the right cells that have to be analyzed. The application is of course to(More)