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1 Tertiary villi (human placenta, midpregnancy)(A) Lower and (B) higher magnification. Stain: Hematoxylin - azophloxine. (C) electron microscopy of Hofbauer cell. (A, B) show tertiary villi and intervillous spaces. Squeezed between villi fibrinoid clots (1). The large arrow (2) points to either a detached, free circulating large STC (syncyt...placenta; chorionic villi; Hofbauer cell; fibrinoid; syncytiotrophoblastPoja Histology Collection - Placenta
2 Tertiary villi (human placenta, late midpregnancy): (A) Left: stain: Hematoxylin - azophloxine. (B) Right: electron microscopy (low magnification). At the left (A) multinucleated syncytiotrophoblast cells (STCs, 1) and vaguely cytotrophoblast cells (CTCs, 2) cover the loose fetal stroma (4). A large and a small arteriole (3) are embedded with stro...placenta; tertiary villi; placental barrier; Hofbauer cell; vasculosyncytial membrane; syncytiotrophoblastPoja Histology Collection - Placenta
3 Survey of implanted blastocyst (human, ca. 3 weeks-old embryo) and detail of advanced stage of decidua cells (human, mid pregnancy)Stain: Hematoxylin-eosin (A, left) and Azan (B, right). (A) Left: section through a slightly damaged implantation site shows at (1) the uterine lumen and (2) the decidua capsularis while at (3) several uterine glands are visible. At arrow (4) the amniotic cavity, (5) points to embryonic shield and...placenta; uterus; syncytiotrophoblast; implantation; blastocystPoja Histology Collection - Placenta
4 Normal term placenta with umbilical cord attached to the fetus (human)The macroscopy shows the expelled placenta as a discoidal mass with a circular outline about 15-20 cm in the ruptured amnionitic and chorionic sacs. Amnion and smooth chorion (chorion leave) are fused and continuous with the margins of the placenta. The fetal surface (inner surface) is covered by...placenta; amnion; chorion; umbilical cord; fetusPoja Histology Collection - Placenta
5 Survey of the intervillous space with villi (human placenta, full-term)Stain: Perjodic Acid Schiff reaction (PAS). At the right and left side the chorionic plate (1) with few cross-sectioned umbilical vessels (2), at (3) a detached amnion. Cross-sections of thick stem villi (4) at the fetal side ramify into terminal villi (tertiary) that are found stuffed (due to fix...placenta; stem villus; syncytiotrophoblast; amnionPoja Histology Collection - Placenta
6 Surveys/detail of the decidua basalis and intervillous space of the placenta (human placenta, late midpregnancy)Stain: Hematoxylin ?azophloxine (A, C), Trichrome (Goldner) (B). Left pictures (A, B): The maternal side at the bottom consists of a broad zone of the stripped basal decidua (1) intermingled with reddish matrix-type fibrinoid accumulations and streaks (Rohr) (2), close to the anchoring villi (3) an...placenta; chorionic villi; fibrinoid; trophoblast shellPoja Histology Collection - Placenta
7 Electron microscopy of cytotrophoblast cell (human placenta, early pregnancy)Below a single electron-light cytotrophoblast cell (CTC or Langhans cell, 1) covered by a syncytiotrophoblast cell (STC, 2) with two nuclei. A continuous basal lamina (3) separates the CTC and STC from the embryonic connective tissue. The CTC appears as a blast-like cell with a large electron-l...placenta; tertiary villi; syncytiotrophoblast; placental barrierPoja Histology Collection - Placenta
8 Tertiary villi (human placenta, early pregnancy)Stain: (A, left) Azan. (B, right) Immunoperoxidase staining with diaminobenzidin (DAB) and hematoxylin counterstaining for human anti-chorionic gonadotrophin (hCG-DAKO 231 antibody). (A) shows blue grey-stained postmitotic multinucleated syncytiotrophoblast cells (STC, 1b), partially cut tangential...placenta; chorionic villi; placental barrier; HCGPoja Histology Collection - Placenta
9 Anchoring villi (human placenta, early midpregnancy)Stain: Hematoxylin -azophloxine. Survey (A) and detail (B). The maternal side at the bottom shows reddish matrix-type fibrinoid accumulations (1) (Rohr's fibrinoid layer) close to an anchoring villus (2) and the cytotrophoblastic cell columns (3). The anchoring villus is lined by cytotrophoblast...placenta; chorionic villi; Hofbauer cell; anchoring villus; cytotrophoblastPoja Histology Collection - Placenta
10 The Clinical Anatomy of Type II SLAP LesionsObjectives: 1.To describe the clinical anatomy associated with Type II SLAP lesions. 2.To define and illustrate a Type II SLAP lesion using a cadaver specimen. 3.To review coomon mechanisms of injury that may lead to a SLAP II injury.Clinical Anatomy Type II Slap LesionsHEAL Peer Reviewed Collection
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