A major challenge in clinical periodontics is to find a reliable molecular marker of periodontal support loss with high sensitivity, specificity and utility (Buduneli & Kinane 2011). Molecules derived from inflamed host tissue and pathogenic bacteria have the potential of being used as markers of periodontitis; however, molecular markers of bone resorption have advantages as they relate to specificity for bone, easy detection, pre-analytic stability and availability of sensitive and specific assays for detection (Forde et al. 2006). Up to now, at least 90 different components in gingival crevicular fluid (GCF) and oral fluids have been evaluated as possible biomarkers for diagnosis of periodontal disease and they can. | Clive Oxenden Christina Latham-Koenig Paul Seligson with Lindsay Clandfield New ENGLISH FILE Pre-intermediate Teacher s Book elt englishfile pre-intermediate OXFORD Contents Syllabus checklist 4 Introduction 8 What do Pre-intermediate students need Study Link Course components Student s Book Files 1-9 Back of the Student s Book For students Workbook MultiROM Student s website For teachers Teacher s Book Video Class cassettes audio CDs Test booklets Teacher s website Lesson plans 12 Photocopiable activities 135 Contents Grammar activity answers Grammar activity masters Communicative activity instructions Communicative activity masters Song activity instructions Song activity masters Tests 228 Quicktest instructions and answers End-of-course test instructions and answers End-of-course test tapescripts Quicktests End-of-course test Syllabus checklist -p- 4 o Who s who Grammar Vocabulary word order in questions common verb phrases classroom language 6 Who knows you better present simple family personality adjectives a B At the Moulin Rouge present continuous the body prepositions of place 10 The Devil s Dictionary defining relative dauses o person expressions for paraphrasing who. a thing which. like for example etc. 12 Practical English At the airport 13 Writing Describing yourself 14 Revise Check What do you remember What can you do 16 Right place wrong time past simple regular and irregular verbs holidays 18 A moment in time past continuous prepositions of time and place at in on 20 B Fifty years of pop questions with and without auxiliaries question words pop music 22 Q One October evening so because but although verb phrases 24 25 26 Practical English At the conference hotel Writing The story behind a photo Revise a Check What do you remember What can you do 28 Where are you going going to present continuous future arrangements look after for etc. 30 The pessimist s phrase book wifi won t predictions opposite verbs 32 B I ll always love you will won t
