For sweet cherry,the economic benefit of protected cultivation is much higher than that of open field cultivation. Howev......

目的:比较自然妊娠与辅助生殖技术(ART)妊娠早期流产胎儿的绒毛染色体非整倍体发生。方法:共收集698例自然妊娠和ART妊娠早期流产......

目的 探讨弓形虫感染与不良妊娠结局的关系。方法 采用酶联免疫吸附实验法，检测长春地区93名有流产、畸形等不良妊娠结局的孕产妇（实......