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Welcome to the eGyanKosh portal, your ultimate resource for educational materials from Indira Gandhi National Open University (IGNOU) for the year 2025. In this segment, we present detailed study material focused on “खंड-4 विटामिन और न्यूक्लिक अम्ल,” which delves into the essential topics of vitamins and nucleic acids. Designed to support learners in their academic journey, this comprehensive collection is available for free download, ensuring that you have access to high-quality resources at your fingertips. Whether you’re a student aiming to enhance your knowledge or a researcher seeking to deepen your understanding, our curated materials will guide you through the complexities of these vital subjects. Download now and embark on your learning journey with us!