Robert, German nucleic acid biochemist and cytochemist, 1884-1955. First to detect DNA in cells by a specific cytochemical test. See: Feulgen cytometry.
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cariolise, identificada pela perda completa do material genetico e sua ausencia, nao sendo possivel ver a coloracao da reacao de Feulgen, indicativa de processo tardio de morte celular (16) (Figura 1).
Histological sections were cut at 5 m thickness and stained with Feulgen Nuclear and Light Green to measure the maximum thickness of the apical ectodermal ridges.
Comparison between the toluidine blue stain and the feulgen reaction for evaluation of rabbit sperm chromatin condensation and their relationship with sperm morphology.
The abdomen of each larva was opened ventrally with fine needles and stained with the Feulgen method (30).
Root tips were hydrolysed with 1N HCL at 60C during 15 mn and stained according to the Feulgen technique.
arcticum complex were then opened to expose the salivary glands and gonads and stained in Feulgen (Rothfels and Dunbar, 1953).
On the nonsectioned scales the following techniques were applied: Feulgen for detection of nuclei accoding to Paulete and Becak (1976) and Toluidine Blue for detection of acid regions according to Junqueira and Junqueira (1983).
Feulgen reaction specifically stained nuclear chromatin; the aldehyde liberated during hydrolysis is from the deoxypentose but not from ribose.