1923 Steenbock Discovered UV Light Increases Vitamin D In Food Vintage Ad Card

Description

1923 Steenbock Discovered UV Light Increases Vitamin D In Food Vintage Ad Card
NOTE:
THESE ARE NOT POSTCARDS
THEY ARE TRADE/ADVERTISING CARDS.
THEY ARE MUCH SMALLER THAN A STANDARD POSTCARD
AND
THERE IS ADVERTISING TEXT ON THE BACK!
THE CARD DIMENSIONS ARE APPROXIMATELY
2 3/4 '' x  2 ''  or  7 cm. x  5 cm.
ORIGINAL VINTAGE ADVERTISING CARD
1923  STEENBOCK DISCOVERED UV LIGHT INCREASES VITAMIN D IN FOOD
In 1923, Steenbock demonstrated that irradiation by ultraviolet light increased the
vitamin D content of foods and other organic materials. After irradiating rodent food,
Steenbock discovered that the rodents were cured of rickets. It is now known that
vitamin D deficiency is a cause of rickets.
THE REVERSE SIDE HAS FRENCH AND DUTCH TEXT
ABOUT THE IMAGE ON THE FRONT SIDE
THIS IS PRINTED ON 'NORMAL' WEIGHT/THICKNESS
PAPER AND NOT  PRINTED ON HEAVIER  CARD STOCK
SEE IMAGES ABOVE
THE CARD DIMENSIONS ARE APPROXIMATELY
2 3/4 '' x  2 ''  or  7 cm. x  5 cm.
NOTE:
THE IMAGE ABOVE IS LARGER THAN THE CARD
TO SHOW THE DETAIL.
THE CARD IS NOT A MODERN REPRODUCTION AND IT IS NOT PERFECT
THERE MAY BE:
-SLIGHT PAPER LOSS
- SMUDGING
- ROUNDED CORNERS
- WEAK CORNERS
- SIGHT GLUE ADHESION ON BACK
SEE THE IMAGES ABOVE!
160
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