oral challenge

Directory

References

Discover

Agnes with a lamb near her feet. St. Agnes (Saint Agnes) design drawing for stained glass window by J&R Lamb Studios, ink, mount size 10.5 x 14.5 in.

Roman Catholic Saints

Flags of the countries of the world (flagpoles).

How Many Countries Are There in the World?

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

Candles Burning On Table In Church

What Is the Most Widely Practiced Religion in the World?

Artist interpretation of a Space meteoroid impact. Meteor impact. Asteroid, End of the world, danger, destruction, dinosaur extinct, Judgement Day, Planet Earth, Doomsday Predictions, comet

10 Failed Doomsday Predictions

Chinese pictograph, calligraphy tablet of Huang Tingjian, a famous calligrapher in Ancient Song Dynasty. The background of Chinese cultural elements.

The World’s 5 Most Commonly Used Writing Systems

Statue of Nostradamus

Nostradamus and His Prophecies

oral challenge

medicine

Learn about this topic in these articles:

food allergies

In food allergy
…confirm a food allergy, an oral challenge may be undertaken (with medical supervision). In this test the suspected food is eaten in increasing amounts over a period of time until a reaction occurs. An oral challenge may not be possible for those who experience anaphylactic reactions.
Read More