Publications by authors named "M Raubach"
Daily rhythms of activity driven by circadian clocks are expressed by many organisms, including molluscs. We initiated this study, with the nudibranch Melibe leonina, with four goals in mind: (1) determine which behaviors are expressed with a daily rhythm; (2) investigate which of these rhythmic behaviors are controlled by a circadian clock; (3) determine if a circadian clock is associated with the eyes or optic ganglia of Melibe, as it is in several other gastropods; and (4) test the hypothesis that Melibe can use extraocular photoreceptors to synchronize its daily rhythms to natural light-dark cycles. To address these goals, we analyzed the behavior of 55 animals exposed to either artificial or natural light-dark cycles, followed by constant darkness.
View Article and Find Full Text PDFPurpose: Intraoperative localization of small tumors or malignant polyps has been an important issue in laparoscopic colon surgery. We have developed a new method for preoperative endoscopic tumor marking using a ring-shaped magnetic marker.
Methods: In a pilot study, 28 patients with small colonic (n = 23) or rectal tumors (n = 5) underwent endoscopic magnetic clipping prior to laparoscopic resection.
Objective: Breast duct endoscopy is increasingly used for evaluation of intraductal disease. We present a new rigid instrument for ductoscopy that allows intraductal biopsy and the removal of small lesions.
Methods: Overall, 102 women with breast cancer or pathologic nipple discharge were included in the analysis.
Objective: Breast duct endoscopy is increasingly used for evaluation of intraductal disease. We have investigated a new rigid instrument for ductoscopy and intraductal biopsy of pathologic lesions.
Methods: From 2002 to 2006, ductoscopy was performed in 111 women with breast cancer or pathologic nipple discharge.