Summary
With the application of ultrasonic energy a colloidal gold may be easily prepared with a particle diameter of less than 10 nm and suitable for use as an immunological marker for TEM-studies. This new approach replaces the use of phosphorus, traditionally used for producing gold sols of the smallest diameter.
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Baigent, C.L., Müller, G. A colloidal gold prepared with ultrasonics. Experientia 36, 472–473 (1980). https://doi.org/10.1007/BF01975154
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DOI: https://doi.org/10.1007/BF01975154