What is "dharmaguptaka"

The Dharmaguptaka ( Sanskrit; ) are one of the eighteen or twenty early Buddhist schools, depending on the source. They are said to have originated from another sect, the Mahīśāsakas. The Dharmaguptakas had a prominent role in early Central Asian and Chinese Buddhism, and their Prātimokṣa (monastic rules for bhikṣus and bhikṣuṇīs) are still in effect in East Asian countries to this day, including China, Vietnam, Korea, and Japan. They are one of three surviving Vinaya lineages, along with that of the Theravāda and the Mūlasarvāstivāda.