В лимфатических узлах лимфатические сосуды распадаются на многочисленные узкие протоки, в которых происходит очистка лимфы, отфильтровываются погибшие клетки (в том числе раковые), бактерии. В лимфатических узлах вызревают лимфоциты и находятся фагоциты, уничтожающие микробов и прочие антигены. В лимфатические сосуды, отходящие от органов пищеварения, поступают некоторые питательные вещества, которые затем попадают в кровь с потоком лимфы.
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Task 3 1 They have done it today 2 How many times have you seen this man? 3 Have you ever played tennis? 4 I have never eaten such fish before 5 He has not written the test yet Task 4 1 What has Fred bought recntly. 2 Have they visited this museum. 3 How many computers has my brother got at home? 4 Has Helen finished translating the article? Task 5 1 How many tasks have you already done? 2 Have you seen Nick today? 3 Yesterday I went shopping. 4 She visited her grandparents last weekend.
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Task 3 1 They have done it today 2 How many times have you seen this man? 3 Have you ever played tennis? 4 I have never eaten such fish before 5 He has not written the test yet Task 4 1 What has Fred bought recntly. 2 Have they visited this museum. 3 How many computers has my brother got at home? 4 Has Helen finished translating the article? Task 5 1 How many tasks have you already done? 2 Have you seen Nick today? 3 Yesterday I went shopping. 4 She visited her grandparents last weekend.
