A more thorough explanation:

Term: In apicibus juris
Definition: This Latin phrase means "among the most subtle doctrines of the law." It refers to the most complex and nuanced aspects of legal theory and practice.
Examples: One example of in apicibus juris might be the legal concept of mens rea, which refers to the mental state of a defendant at the time of a crime. Another example could be the doctrine of stare decisis, which holds that courts should follow precedent when making decisions. These are both highly technical and intricate aspects of the law that require a deep understanding of legal theory and practice.
Explanation: In apicibus juris is a term that describes the most complex and subtle aspects of the law. It refers to concepts and doctrines that are difficult to understand and require a high level of expertise to navigate. The examples given illustrate this definition by highlighting two legal concepts that are highly technical and require a deep understanding of legal theory and practice.