• Samuel Natelson
  • Ethan A. Natelson


The nature of protoplasm was a subject of interest to all biological investigators after the discovery of the microscope. In the sense it was used in the 17th and 18th centuries, it referred to the viscous sol in the cell in which the organelles were suspended. The similarity of this material to the whites of eggs was noted early and some, such as Fourcroy at the end of the 18th century, referred to protoplasm as albuminoid substances or literally, substances resembling the white of an egg. Berzelius is quoted as saying that serum albumin is the same as egg white and that the leukocytes are only globular forms of albumin.


Ammonium Sulfate Globular Form Automatic Amino Acid Analyzer Fractionate Serum Protein Immunochemical Technique 
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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Samuel Natelson
    • 1
  • Ethan A. Natelson
    • 2
  1. 1.Department of Environmental Practice, College of Veterinary MedicineUniversity of TennesseeKnoxvilleUSA
  2. 2.University of Texas Medical School and St. Joseph HospitalHoustonUSA

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