Raven Cpm Test

The Raven CPM Test, or Raven’s Coloured Progressive Matrices, is a nonverbal assessment of reasoning ability that measures how individuals identify relationships and patterns in visual information. Each item presents a geometric figure with a missing section, and the test taker selects the option that completes the pattern by comparing shapes, positions, colors, and other visual features. Designed for children and people with limited language or cognitive abilities, the test is widely used in behavioral research, educational assessment, and clinical settings to examine fluid reasoning while reducing the influence of verbal skills and formal schooling.

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Education

JoVE Core - Biology

C4 Pathway and CAM

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2019

Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy. C4 Pathway The C4 pathway is used by plants such as...

Research

JoVE Journal - Biology

Chick ex ovo Culture and ex ovo CAM Assay: How it Really Works

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Cited by 110 •

2009

The chick chorioallantoic membrane (CAM) is a unique, naturally immunodeficient supportive culture environment to study angiogenesis and tumorigenesis. This video article demonstrates the different steps in chick ex ovo culture, application of potentially angiogenic substances and successful inoculation of tumor cells and tissues on the surface of the CAM.

The In ovo CAM-assay as a Xenograft Model for Sarcoma

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Cited by 63 •

2013

The in ovo chorioallantoic membrane (CAM) is grafted with fresh sarcoma-derived tumor tissues, their single cell suspensions, and permanent and transient fluorescently labeled established sarcoma cell lines. The model is used to study graft- (viability, Ki67 proliferation index, necrosis, infiltration) and host (fibroblast infiltration, vascular ingrowth) behavior.

Renal Organotypic Culture on Chicken CAM: A Technique for Transplantation of Murine Kidney Explants on Chicken CAM to Induce Formation of Renal Vascular Architecture

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2023

This video describes a method for studying organ development using an improved xenotransplantation setup on chorioallantoic membrane (CAM) from avian embryos. This method allows for the development of fully vascularized cultured embryonic organs and organoids.

The In Ovo Chick Chorioallantoic Membrane (CAM) Assay as an Efficient Xenograft Model of Hepatocellular Carcinoma

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Cited by 62 •

2015

The chick chorioallantoic membrane (CAM) is immunodeficient and highly vascularized, making it a natural in vivo model of tumor growth and angiogenesis. In this protocol, we describe a reliable method of growing three-dimensional, vascularized hepatocellular carcinoma (HCC) tumors using the CAM assay.

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