Overview

TSEs disrupt the function of nerve cells. In TSEs there are characteristic vacuolar degeneration of neurons in the brain and spinal cord, giving the tissue a spongelike appearance (Fig. 1). TSEs evoke no immune response and are inevitably fatal (2-5).

The incubation period (ie, the time between exposure and the onset of clinical signs) in cattle is very long, rang-

Figure 1. Lesions in the gray matter of the brain of a sheep with scrapie: (A) typical spongiform change in neurons; (B) spongiform change and astrocytic hypertrophy and hyperplasia, (a) Hematoxylin and eosin stain; (b), glial fibrillar acid protein (GFAP) stain. Magnification X500. Source: Courtesy of Dr. Robert Higgins, School of Veterinary Medicine, University of California, Davis.

Figure 1. Lesions in the gray matter of the brain of a sheep with scrapie: (A) typical spongiform change in neurons; (B) spongiform change and astrocytic hypertrophy and hyperplasia, (a) Hematoxylin and eosin stain; (b), glial fibrillar acid protein (GFAP) stain. Magnification X500. Source: Courtesy of Dr. Robert Higgins, School of Veterinary Medicine, University of California, Davis.

71. J. A. Luna, R. L. Garrote, and J. A. Bressan, "Thermo-kinetic Modeling of Peroxidase Inactivation during Blanching-Cooling of Corn on the Cob," Journal of Food Science 51,141145 (1986).

72. A. B. Newman, "The Drying of Porous Solids: Diffusion Calculations," Transactions oftheAIChE 27, 310 (1931).

73. G. Hough, S. M. Alzamora, and J. Chirife, "Effect of Piece Shape and Size on Leaching of Vitamin C during Water Blanching of Potato," Journal of Food Engineering 8,303-310 (1988).

74. P. Rice, J. D. Selman, and R. K. Abdul-Rezzak, "Nutrient Loss in the Hot Water Blanching of Potatoes," International Journal of Food Science and Technology 25, 61-65 (1990).

Sleeping Sanctuary

Sleeping Sanctuary

Salvation For The Sleep Deprived The Ultimate Guide To Sleeping, Napping, Resting And  Restoring Your Energy. Of the many things that we do just instinctively and do not give much  of a thought to, sleep is probably the most prominent one. Most of us sleep only because we have to. We sleep because we cannot stay awake all 24 hours in the day.

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