Manuel Berrios

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Plants are good environmental sensors of the soil conditions in which they are growing. They also respond directly to the state of air. The tops of plants are collectors of air pollutants, and their chemical composition may be a good indicator for contaminated-areas when it is assessed against background values obtained for unpolluted vegetation. Both,(More)
The ultrastructure of spermatozoa from the cauda epididymidis and vas deferens of Octodon degus-a Chilean hystricomorph rodent-is presented. The head of spermatozoa measured 7.7 micrometer long by 5.9 micrometer wide and the tail was 41 micrometer long. The head was flattened dorso-ventrally and ovate in outline. The acrosome was the most distinctive(More)
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