If they are, they should not be bred, even if they do not show symptoms of the disease. (petwave.com)
Not all the toddlers will have the same type of symptoms of a disease; they will be varying from one another depending upon the type of the health problem and its severity. (theparentszone.com)
I experienced no physical symptoms of the disease for twelve years, although the consequences of surgery and hormone treatment were no fun. (critical-angle.net)