We investigate 2-local *-automorphisms, 2-local *-antiautomorphisms, and 2-local Jordan *-derivations on certain algebras with involution.

BACKGROUND: Based on our knowledge, there have been no ultrasonographic studies on uterine involution following induction of abortion in the bitch.OBJECTIVES: To evaluate ultrasonographic features of uterine involution following induction of abortion.METHODS: In a concurrent study, pregnancy was terminated in 6 bitches in the third trimester of pregnancy by ultrasound guided induced fetal death. Ultrasonographic examination of the reproductive tract was carried out after the day of complete abortion up to complete uterine involution, in which uterine dimensions were unchanged within two consecutive evaluations. Uterine shape, size, and echogenicity as well as wall layering were evaluated in ultrasonographic evaluations, and mean values were measured in both placental and interplacental regions.RESULTS: Ultrasonographic features revealed that, uterine wall is detected on ultrasound images having six different layers on the basis of its echogenicity. Wall layering was very explicit and distinct within the first week after abortion and lost its distinction in the course of uterine involution. On the day after abortion, placental regions measured approximately twice the size of the uterus in interplacental areas. In the first week, the mean values of the placental and interplacental thickness were 2.11±0.31cm and 1.12±0.20cm respectively, measured in uterine horns. After the third week, the placental and interplacental regions lost their distinction and thickness. In the last two weeks, uterine horns were almost equal in dimension in every part. The time of complete involution varied amongst these 6 different bitches, being in the 6th, 8th, 9th, 10th, and 13th week after the induction of abortion.CONCLUSIONS: The findings of this study could be a basis for ultrasonographic evaluation of abnormal uterine structures and also detection of uterine involution time after abortion or parturition.

After parturition, the genital system is returning to its normal non-pregnant state. The reduction in the size of the genital tract is called involution. involution of the ovine uterus after parturition was investigated following the intrauterine administration of oxytetracycline (2 gr). Under general anaesthesia and using strict asepsis the genital tract of ewes in 2nd month of gestation were exteriorised through a posterior midline laparatomy and four non-toxic split aluminium shots with different sizes were sutured to the wall of the uterine horns and internal os of the cervix (Radio-opaque markers method). Then, for assessment of uterine involution sequential radiographs were taken on the day of lambing and 3, 7, 14, 28 and 42 days after parturition. Three measurements (uterine body length, gravid and non-gravid horn diameter) were made on each of the radiographs. involution of the uterine body length and gravid horn diameter were completed by about 28 days after parturition in sterile water treated (Control) group (n = 6) whereas completion of the non-gravid horn involution was significantly more rapid (by about 14 days after parturition) than gravid horn (P<0.05). The mean of the uterine body length, gravid and non-gravid horn diameter of oxytetracycline administered (treatment) ewes (n = 4) at any stages after parturition were non significantly higher than the control group (P>0.05). The mean of three measurements of the treatment (n = 4) group at the day 42 were similar to the control group at the day 14 after lambing. However, the present study demonstrates that treatment with intrauterine oxytetracycline may prolong involution of the reproductive tract of ewes after parturition.