টিকা (VACCINE) কোনাে রােগ প্রতিরােধের উদ্দেশ্যে কোনাে রােগজীবাণু থেকে প্রস্তুত যে উপাদান মানুষের শরীরে প্রবেশ করলে ওই রােগের বিরুদ্ধে প্রতিরােধ জন্মায়, তাকে ভ্যাকসিন ( Vaccine) বা টিকা বলে। অনাক্রম্যতা অর্জনের জন…
There is, one knows not what sweet mystery about this sea, whose gently awful stirrings seem to speak of some hidden soul beneath; like those fabled undulations of the Ephesian sod over the buried Evangelist St. John. And meet it is, that over these sea-pastures
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There is, one knows not what sweet mystery about this sea, whose gently awful stirrings seem to speak of some hidden soul beneath; like those fabled undulations of the Ephesian sod over the buried Evangelist St. John. And meet it is, that over these sea-pastures
There is, one knows not what sweet mystery about this sea, whose gently awful stirrings seem to speak of some hidden soul beneath; like those fabled undulations of the Ephesian sod over the buried Evangelist St. John. And meet it is, that over these sea-pastures
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