There is no practical difference between feminine and feminine (-), except in the way they are represented, one by both kanji and symbols, and the other by kanji only. What is distinct from the negative in question is the positive, which is often indicated by a (+) sign. In the case of a specific blood test sheet, if a qualitative approach is used, the specific result is indicated by either a negative or a positive, which may be in Chinese characters or symbols. If it is a symbol, a (-) sign would represent a negative and a (+) sign would represent a positive. Usually only one way will be used to indicate this, sometimes both Chinese characters and symbols are used, and the negative will be followed by a (-) sign, and if it indicates the positive, it will be followed by a (+) sign.