Transect of zooplankton collecting stations. Spcdcs not hitherto reported from areas within dashed liue <'Ousiclered new to this area. (aperture size .36 mm) net; no quantitative analyses were made on this sample. At the shelf stations (A-D) the net was lowered to as near the bottom as practicable and then raised to the surface. At the other stations, all in deep water, the maximum depth of each collection was 200 m. The oblique tows were made at ships' speeds of approximately 2 knots. The zooplankton was preserved in 5% sea water-formalin solution. TABLE 1. Zooplankton collecting data and types of analyses made on the samples. No. Ship, cruise, and date samples Stations Types of analyses
he plankton and midwater trawl samples on which this paper is based were obtained during two cruises of R. V. Anton Bruun in 1963 and 1964, which, at that time, was participating in the Biological
Primary venous aneurysms are infrequently noted and rarely have clinical significance. An important exception, however, is an aneurysm of the popliteal vein that is known to be a source for pulmonary emboli. We present the case of a previously healthy 57-year-old man with recurrent episodes of occult pulmonary embolism. Initial diagnostic investigations were compatible with multiple pulmonary emboli, but no source was identified. Subsequently, an indium 111-labeled platelet scan confirmed a site of active thrombus formation in the right lower extremity above the knee. Magnetic resonance imaging defined a saccular aneurysm of the popliteal vein, which was confirmed by contrast venography. Thereafter, the patient had resection of the venous aneurysm and tangential venorrhaphy. After operation duplex scanning confirmed patency of the venous repair. This is the eleventh report in the English-language literature of pulmonary emboli suspected of having originated from a popliteal venous aneurysm.
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