One of several plasma proteins such as transthyretin that migrate faster than albumin in an acidic starch gel.
- Preauricular tag
A common minor anomaly, this is a rudimentary tag of ear tissue. It often contains a core of cartilage. The tag is typically located just in front of the ear (auricle) and is therefore called a preauricular tag.
Pertaining to something that is not yet overtly cancerous, but appears to be on its way to becoming a cancer. Synonymous with premalignant.
- Preclinical study
A study to test a drug, a procedure, or another medical treatment in animals. The aim of a preclinical study is to collect data in support of the safety of the new treatment. Preclinical studies are required before clinical trials in humans can be started.
Unusually early development of intellectual powers, speech, physical traits, and so on.
- Precocious puberty
The onset of secondary sexual characteristics, such as breast buds in girls, growth of the penis and thinning of the scrotum in boys, and the appearance of pubic hair in both sexes, before the normal age of puberty.