Browse all available CCEA GCSE Past Papers and Mark Schemes.

CCEA brings together curriculum, examinations and assessment. Our mission is to enable the full potential of all learners to be achieved and recognised. 150 pupils from schools across …

CCEA offers 31 GCE A level qualifications in a range of subjects. These qualifications, designed to suit students aged 16 and over, are at Level 3 on the Regulated Qualifications Framework. …

2021年11月15日 · A CEA test measures the level of carcinoembryonic antigen (CEA) in the blood or other body fluid. As a type of tumor marker, CEA is an indicator of whether cancer is …

A carcinoembryonic antigen (CEA) test measures a specific blood glycoprotein called CEA. It means a protein with a lot of sugars added to it by normal or cancerous cells. Scientists first …

CCEA Biology past exam papers, for students studying GCSE Biology in Northern Ireland. You can download the papers and marking schemes by clicking on the links below. Scroll down for …

2021年4月17日 · What is the Carcinoembryonic antigen (CEA)? CEA is an antigen (small protein) that is found on the surface of colon, rectal, gastric and other types of cancer cells and high …

cea 属于称为 cea 相关细胞粘附分子 (ceacams) 的免疫球蛋白家族，cea 与内皮细胞的各种功能密切相关，包括细胞在体内和体外的粘附、增殖和迁移。它存在于正常细胞细胞膜的腔内侧，被 …

癌胚抗原（carcinoembryonic antigen，CEA）是1965年由Gold和Freedman首先从结肠癌和胚胎组织中提取的一种肿瘤相关抗原，是一种具有人类胚胎抗原特性的酸性糖蛋白，存在于内胚层细 …

This assay is intended for the in vitro quantitative determination of carcinoembryonic antigen in human serum and plasma. 1 The Elecsys CEA assay is further indicated for serial …