clear, the diarrhea in some cases was very persistent.

Lesions of the gums, and the oral mucous membrane, and the throat were
observed. The affected areas became deep red, then violacious in color;
and in many instances ulcerations and necrosis (breakdown of tissue)
followed. Blood counts done and recorded by the Japanese, as well as
counts done by the Manhattan Engineer District Group, on such patients
regularly showed leucopenia (low-white blood cell count). In extreme cases
the white blood cell count was below 1,000 (normal count is around 7,000).
In association with the leucopenia and the oropharyngeal lesions, a variety
of other infective processes were seen. Wounds and burns which were
healing adequately suppurated and serious necrosis occurred. At the same
time, similar ulcerations were observed in the larynx, bowels, and in
females, the gentalia. Fever usually accompanied these lesions.

Eye injuries produced by the atomic bombings in both cities were the
subject of special investigations. The usual types of mechanical injuries
were seen. In addition, lesions consisting of retinal hemorrhage and
exudation were observed and 75% of the patients showing them had other
signs of radiation injury.

The progress of radiation disease of various degrees of severity is shown
in the following table:

Summary of Radiation Injury
Clinical Symptoms and Findings

Day
after
Explo-