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CELLS alive! Library: Contents of Volume 7

Biofilm Growth - Pseudomonas aeruginosa

7.1 Biofilm Growth - Pseudomonas aeruginosa

Rocks in a stream bed are often slippery due to the growth of a mixed population of attached bacteria, algae and fungi. These Pseudomonas aeruginosa (bacteria) are shown growing on the surface of a fiber and forming a single species biofilm.

Biofilm Growth - Escherichia coli

7.2 Biofilm Growth - Escherichia coli

Like Pseudomonas, E. coli can sometimes grow as a dense mat of cells on a surface.

Toenail fungus - Trichophyton mentagrophytes

7.3 Toenail fungus - Trichophyton mentagrophytes

Conidia of a common fungus that grows on human toenails are shown sprouting hyphae.

Embryonic heart cells

7.4 Embryonic heart cells

Individual cells from the chick heart start beating spontaneously when grown in culture. Once good "electrical" connections are formed between adjacent cells, entire sheets of cells begin beating in unison.

Bacterial growth - Serratia

7.5 Bacterial growth - Serratia sp.

These rod-shaped bacteria commonly live in soil and water. Some species of Serratia are pathogenic, causing septicemia and pulmonary infection.

Clover root growth

7.6 Clover root growth

These time-lapse sequences show the advancing root tip of gerninating clover seeds. Time-lapse: 600 X real time.

Clover root hairs

7.7 Clover root hairs

Nutrient uptake is maximized in young roots by root hairs. These projections of single root cells extend into the surrounding soil and provide a much higher surface area/volume ratio in contact with the nutrient source.

Cytoplasmic streaming in root hairs

7.8 Cytoplasmic streaming in root hairs

Cytoplasm in the root hairs streams to the root tip and back, further increasing the efficiency of waste product removal, nutrient uptake, and transport to and from the main root structure.

Volume 1 (white blood cells, bacteria, parasites)

Volume 2 (bacterial growth, motility)

Volume 3 (bacterial motility, lymphocytes vs. cancer, bread)

Volume 4 (bacterial growth, melanoma growth, dust mites)

Volume 5 (aquatic organisms)

Volume 6 (animation)

Volume 7 (biofilms, fungal growth, heart cells, roots)

Volume 8 (cuttingboard, C. elegans, dog tick, cilia)


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