32-Bar Rhythm Changes Compositions

Charlie Parker, Composer ◽

10.1093/oso/9780190923389.003.0003 ◽

2020 ◽

pp. 55-80

Author(s):

Henry Martin

Keyword(s):

Red Cross ◽

Ira Gershwin

Chapter 2 begins with an overview of Parker’s fully composed 32-bar rhythm changes compositions. Parker is strongly associated with improvising on rhythm changes (the chord changes of “I Got Rhythm,” by George and Ira Gershwin), but there are only six such pieces, and they are all in B♭ major: “Red Cross,” “Shaw ’Nuff,” (co-composed with Dizzy Gillespie), “Moose the Mooche,” “Thrivin’ from a Riff,” “Dexterity,” and “Passport.” This allows for convenient comparison among them. Among the various conclusions, the analyses show that despite being contrafacts on rhythm changes—all in the same key and using straightforward bebop harmony—these pieces are satisfyingly different.

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Ultrastructural observations of human monocytes infected with HIV-1

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100084843 ◽

1991 ◽

Vol 49 ◽

pp. 108-109

Author(s):

James K. Koehler ◽

Steven G. Reed ◽

Joao S. Silva

Keyword(s):

Gradient Centrifugation ◽

Virus Production ◽

Human Monocyte ◽

Red Cross ◽

Human Monocytes ◽

Blood Monocytes ◽

Hiv Replication ◽

Electron Microscopic ◽

Ultrastructural Studies ◽

Hiv 1

As part of a larger study involving the co-infection of human monocyte cultures with HIV and protozoan parasites, electron microscopic observations were made on the course of HIV replication and infection in these cells. Although several ultrastructural studies of the cytopathology associated with HIV infection have appeared, few studies have shown the details of virus production in “normal,” human monocytes/macrophages, one of the natural targets of the virus, and suspected of being a locus of quiescent virus during its long latent period. In this report, we detail some of the interactions of developing virons with the membranes and organelles of the monocyte host.Peripheral blood monocytes were prepared from buffy coats (Portland Red Cross) by Percoll gradient centrifugation, followed by adherence to cover slips. 90-95% pure monocytes were cultured in RPMI with 5% non-activated human AB serum for four days and infected with 100 TCID50/ml of HIV-1 for four hours, washed and incubated in fresh medium for 14 days.

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