生物知识 次缢痕(secondary constriction) 染色体上的一个缢缩部位, 由于此处部分的DNA松懈, 形成核仁组织区, 故此变细。它的数量、位置和大小是某些染色体的重要形态特征。每种生物染色体组中至少有一条或一对... 05月05日 发表评论 阅读全文
生物知识 Flow Cytometric Studies on Intracellular Drug Fluorescence Flow cytometry has rapidly evolved from a technique for detecting and sorting cell... 05月05日 发表评论 阅读全文
生物知识 Exo utero Surgery The study of developmental mechanisms in postimplantation mammalian embryos can be... 05月05日 发表评论 阅读全文
生物知识 Skin Stem Cells The skin stem cells are located at two distinct locations, the basement of epiderm... 05月05日 发表评论 阅读全文
生物知识 Mycoplasma Detection Mycoplasma is the generic term used by cell biologists to denote organisms belongi... 05月05日 发表评论 阅读全文
生物知识 Chromatin Immunoprecipitation (ChIP) Methodology and Readouts The identification of direct nuclear hormone receptor gene targets provides clues ... 05月05日 发表评论 阅读全文
生物知识 Ordered Deletions Using Exonuclease III An important manipulation in molecular genetics is to make ordered deletions into ... 05月05日 发表评论 阅读全文
生物知识 Methods to Study Cancer Therapeutic Drugs That Target Cell Cycle Checkpoints Cell cycle checkpoints operating through a network of multiple signaling pathways ... 05月05日 发表评论 阅读全文
生物知识 Isolation of Stem Cells from Human Umbilical Cord Blood Umbilical cord blood (UCB) is gaining more prominence in recent times as a source ... 05月05日 发表评论 阅读全文
生物知识 Staining protocols for placental explant cultures Staining protocols for placental explant cultures Whole mount staining. The protoc... 05月05日 发表评论 阅读全文