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HeLa (/ ˈ h iː l ɑː /) is an immortalized cell line used in scientific research. It is the oldest human cell line and one of the most commonly used. [1] [2] HeLa cells are durable and prolific, allowing for extensive applications in scientific study.
EF Education First (abbreviated as EF) is an international education company that specialises in language training, educational travels, academic degree programmes, and cultural exchanges. The company was founded in 1965 by Bertil Hult in the Swedish university town of Lund .
The EF English Proficiency Index (EF EPI) attempts to rank countries by the equity of English language skills amongst those adults who took the EF test. [2] It is the product of EF Education First, an international education company, and draws its conclusions from data collected via English tests available for free over the internet.
Hela (/ ˈ h ɛ l ə /) is a fictional character appearing in American comic books published by Marvel Comics.She is based on the goddess Hel from Norse mythology, and was first adapted by Stan Lee and Jack Kirby in Journey into Mystery #102.
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In 2017, over 3 million tests were taken in more than 140 countries, up from 2 million tests in 2012, 1.7 million tests in 2011 and 1.4 million tests in 2009. In 2007, IELTS administered more than one million tests in a single 12-month period for the first time ever, making it the world's most popular English language test for higher education ...
Level 1 Level 3 Grade 7, 8, 9 ISE II 2.0–2.5 5.5–6.5 60–74 Vantage FCE n/a Level 1 MET, MELAB, ECCE B1 Level 2 Entry 3 Level 2 Grade 5, 6 ISE I 1.5 4.0–5.0 40–59 Preliminary PET n/a Entry 3 MET, MELAB: A2 Level 1 Entry 2 Level 1 Grades 3, 4 ISE 0 1.0 n/a 20–39 n/a KET Flyers Entry 2 MET, YLTE A1 Breakthrough Entry 1 Level A1 Grade 2 n/a