Cellulose microfibrils over a protoplast

Cellulose microfibrils over a protoplast

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Caption: Scanning electron micrograph of a protoplast from the protonema (branched structure) of the moss, Physcomitrella patens showing cellulose microfibrils regrowing over the plasma membrane. A protoplast is a single intact cell, chemically treated to break down the outer cellulose wall, leaving only the plasma membrane binding & protecting the plant cell. The cellulose can be chemically encouraged to regrow, as here. Fibrous at first, the surface becomes smooth as more cellulose is laid down. Protoplast technology has enabled nuclear fusion & DNA microinjection, techniques of genetic engineering. Mag: X 3075 at 35mm, X 24,000 (8x10 inch size).

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Keywords: biotechnology, botanical science, botany, cell wall, cells, cellulose, genetic engineering, microfibril, moss, physcomitrella patens, plant structure, plasma membrane, protoplast, scanning electron micrograph, sem

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