There are multiple definitions:

1. in situ lymphocyte(English)

   • examination of functional abilities revealed that these cells derived from small tumors responding to the T-cell mitogens phytohemagglutinin and concanavalin A (Con A), although at lower levels than those of the splenocytes of the animals from which they were obtained
   • PHA, TAA
   • Oncology
   • https://doi.org…3/jnci/73.1.249

2. internal sinus lift(English)

   • sinus lift with lateral wall approach and crestal approach are reliable methods for implant insertion in the posterior maxilla
   • ESL
   • Dentistry, Surgery
   • http://doi.org/…b013e3182386d34