A Splendid Pelvic Tumor, Indeed

Difficile indeed.

Splendid but Hopeless

the city centre, Gradually however the crowd thinned slightly, the driver put his foot down and after a certain amount of stuttering and coughing, the ailing vehicle slowly built up speed. Thereafter the driver's technique for dealing with any obstacle was to blow his horn and accelerate towards it. Miraculously the obstacle would melt away at the very last moment, or if it didn't, we simply sw...

The ATP synthase--a splendid molecular machine.

An X-ray structure of the F1 portion of the mitochondrial ATP synthase shows asymmetry and differences in nucleotide binding of the catalytic beta subunits that support the binding change mechanism with an internal rotation of the gamma subunit. Other structural and mutational probes of the F1 and F0 portions of the ATP synthase are reviewed, together with kinetic and other evaluations of catal...

Venous tumor thrombus from a pelvic osteosarcoma

We present a case of pelvic osteosarcoma in an 18-year-old woman with a tumor thrombus in the left iliac vein, extending to the inferior vena cava. Tumor thrombus has been rarely described with osteosarcoma, with only 14 cases in the literature.

Levels Indeed! A Response to Broadbent

Although Broadbent concedes that we are probably correct in supposing that memory representations are distributed, he argues that psychological evidence is irrelevant to our argument because our point is relevant only at what Marr (1982) has called the implementation^ level of description and that psychological theory is only properly concerned with what Marr calls the computational level. We b...