Embryonic Development of Parthenogenetic and Sexual Eggs in Lower Termites.

Worldwide, termites are one of few social insects. In this research, the stages of embryonic development in the parthenogenetic and sexual eggs of and were observed and described. In , the egg development of the FF and FM groups happened during the early phases of development, whereas in , this appeared mainly during the late phase of development.

[Establishment of arthroscopic trans-septal approach and its clinical application].

Objective: To investigate the method and result of arthroscopic trans-septal approach (ATS).

Methods: Ten fresh cadaveric knees were prepared for anatomical study about the posterior septum, and 65 posterior compartment arthroscopy of the knees were performed to view the structure of the posterior septum. The initial diagnosis included: rheumatoid arthritis, pigmented villonodular synovitis, osteoarthritis, loose body or foreign body in the posterior compartment, posterior cruciate ligament (PCL) injury or avulsion fracture, posterior horn tear of meniscus, undiagnosed swollen knee with pain and effusion, osteochondritis dissecans, pyogenic arthritis, gout.