Look Ma, no chromosomes!

Article Abstract:

Cell division of chromosomes during mitosis and meiosis depends upon the interactions with a bipolar spindle, the spindle is capable of functioning independently of the presence of chromosomes. A series of experiments show that early in the spindle-assembly process microtublues appear, coalesce in bundles and reorganize themselves into bipolar structures even in the absence of centrosomes and kinetochores. The function of chromosomes is to provide a favorable environment for this microtubule assembly.

Analysis, Physiological aspects, Chromosome replication, Spindle (Cell division), Spindle (Cytoplasm)

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A world apart

Article Abstract:

The northern part of Thailand which sits between Burma and Laos still retains many of the ancient Thai traditions that have gradually been eroded in the more cosmopolitan south. Chiang Mai, Thailand's second biggest city, balances the old and new ways of Thai life.

Description and travel, Chiang Mai, Thailand, Northern Thailand

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Radical racers

Article Abstract:

Pictures of model racing cars made by Boy Scouts from pinewood derby car kits are presented. The models include both futuristic and old-fashioned designs.

Models, Portrayals, Automobiles, Racing, Automobiles, Model, Model cars, Automobile racing

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