来源于特化的肛门生殖器乳腺样腺体肿瘤（tumors arising from specialized anogenital mammary like glands,TAFSAMLG）非常罕见,本文收集1例TAFSAMLG并复习文献,对TAFSAMLG的临床病理学特点、病理诊断与鉴别诊断作一初步探讨。
1材...来源于特化的肛门生殖器乳腺样腺体肿瘤（tumors arising from specialized anogenital mammary like glands,TAFSAMLG）非常罕见,本文收集1例TAFSAMLG并复习文献,对TAFSAMLG的临床病理学特点、病理诊断与鉴别诊断作一初步探讨。
1材料与方法
1.1临床资料 患者女性,41岁。外阴部肿块5年。初期肿块如核桃大小,无红肿及疼痛,近1年肿块增大,伴明显胀痛及不适。展开更多
Microsatellite DNA technique was used to detect the genetic variation between five hatchery populations of the Pacific oyster from China and two wild populations from Japan. Seven microsatellite loci screened in this ...Microsatellite DNA technique was used to detect the genetic variation between five hatchery populations of the Pacific oyster from China and two wild populations from Japan. Seven microsatellite loci screened in this study showed high polymorphism in both hatchery and wild populations, as observed in an average number of allele per locus （19.1-29.9） and average expected heterozygosity （0.916-0.958）. No significant difference in average allelic richness or expected heterozygosity was observed between Chinese hatchery populations and Japanese wild populations. Pairwise Fsr values and heterogeneity tests of allele frequencies showed significant genetic differentiation between all populations. According to the neighbor-joining tree constructed on the basis of the Dc distance, the seven populations fell into three groups showing a clear division between hatchery and wild populations, and between the northern and southern hatchery populations. Assignment tests correctry assigned high percentages （97%-100%） of individuals to their original populations and demonstrated the feasibility of microsatellite analysis for discrimination between populations. The information obtained in this study is useful for designing suitable management guidelines and selective breeding programs for the Pacific oyster in China.展开更多
Ontogeny and metamorphic. development of female reproductive organs in Ephedra sinica Stapf were surveyed. At the end of April, female cones began to initialize from the vegetative buds. Pollination occurred in mid-Ma...Ontogeny and metamorphic. development of female reproductive organs in Ephedra sinica Stapf were surveyed. At the end of April, female cones began to initialize from the vegetative buds. Pollination occurred in mid-May and seeds matured at the beginning of July. The ontogenetic pattern of female reproductive organs of E. sin ca is basically similar to that of E. distachya L. The foliar nature of the outer envelope of the ovule in Ephedra is corroborated. Reduction of ovule number as a tendency of speciation in the genus is substantiated by the occurrence of tri-ovulate cones coupled with comprehensive characters of the genus. The metamorphic patterns as well as the leaf nature of the outer envelope indicate that female cones of Ephedra are compound while the female reproductive units of the ovulate cone have been reduced from secondary reproductive shoots similar to those of cordaites by phylogenetic transformation, fusion and reduction. Each fertile bract together with its axillary female reproductive unit composed the Bract Scale and Seed Scale Complex of Ephedra.展开更多
Objective: To study the incidence of mycoplasmagenitalium infection in non-gonococcal urethritis(NGU)/mucopurulent cervicitis (MPC) patients.Method: Polymerase chain reaction (PCR) wasconducted to detect M. genitalium...Objective: To study the incidence of mycoplasmagenitalium infection in non-gonococcal urethritis(NGU)/mucopurulent cervicitis (MPC) patients.Method: Polymerase chain reaction (PCR) wasconducted to detect M. genitalium in the urogenitaltracts of 236 patients with NGU/MPC.Results: There was a specific M. genitalium band in42 out of 236 STD patients who were positive for M.genitalium by PCR.Conclusion: The results indicate that mycoplasmagenitalium exists among sexually transmitted diseasepatients. It may be one of the etiological agents of NGU/MPC.展开更多
基金the Ministry of Education (No. NCET-04-0640)the National Natural Science Foundation of China (No. 30571442).
文摘Microsatellite DNA technique was used to detect the genetic variation between five hatchery populations of the Pacific oyster from China and two wild populations from Japan. Seven microsatellite loci screened in this study showed high polymorphism in both hatchery and wild populations, as observed in an average number of allele per locus （19.1-29.9） and average expected heterozygosity （0.916-0.958）. No significant difference in average allelic richness or expected heterozygosity was observed between Chinese hatchery populations and Japanese wild populations. Pairwise Fsr values and heterogeneity tests of allele frequencies showed significant genetic differentiation between all populations. According to the neighbor-joining tree constructed on the basis of the Dc distance, the seven populations fell into three groups showing a clear division between hatchery and wild populations, and between the northern and southern hatchery populations. Assignment tests correctry assigned high percentages （97%-100%） of individuals to their original populations and demonstrated the feasibility of microsatellite analysis for discrimination between populations. The information obtained in this study is useful for designing suitable management guidelines and selective breeding programs for the Pacific oyster in China.
文摘Ontogeny and metamorphic. development of female reproductive organs in Ephedra sinica Stapf were surveyed. At the end of April, female cones began to initialize from the vegetative buds. Pollination occurred in mid-May and seeds matured at the beginning of July. The ontogenetic pattern of female reproductive organs of E. sin ca is basically similar to that of E. distachya L. The foliar nature of the outer envelope of the ovule in Ephedra is corroborated. Reduction of ovule number as a tendency of speciation in the genus is substantiated by the occurrence of tri-ovulate cones coupled with comprehensive characters of the genus. The metamorphic patterns as well as the leaf nature of the outer envelope indicate that female cones of Ephedra are compound while the female reproductive units of the ovulate cone have been reduced from secondary reproductive shoots similar to those of cordaites by phylogenetic transformation, fusion and reduction. Each fertile bract together with its axillary female reproductive unit composed the Bract Scale and Seed Scale Complex of Ephedra.
文摘Objective: To study the incidence of mycoplasmagenitalium infection in non-gonococcal urethritis(NGU)/mucopurulent cervicitis (MPC) patients.Method: Polymerase chain reaction (PCR) wasconducted to detect M. genitalium in the urogenitaltracts of 236 patients with NGU/MPC.Results: There was a specific M. genitalium band in42 out of 236 STD patients who were positive for M.genitalium by PCR.Conclusion: The results indicate that mycoplasmagenitalium exists among sexually transmitted diseasepatients. It may be one of the etiological agents of NGU/MPC.
