ᴀ ᴄᴏɴꜱᴛᴀɴᴛ ʀᴇᴛᴀʀᴅɪɴɢ ꜰᴏʀᴄᴇ ᴏꜰ 50 ɴ ɪꜱ ᴀᴘᴘʟɪᴇᴅ ᴛᴏ ᴀ ʙᴏᴅʏ ᴏꜰ ᴍᴀꜱꜱ 20 ᴋɢ ᴍᴏᴠɪɴɢ ɪɴɪᴛɪᴀʟʟʏ ᴡɪᴛʜ ᴀ ꜱᴘᴇᴇᴅ ᴏꜰ 15 ᴍ/ꜱ. ᴛʜᴇ ᴛɪᴍᴇ ᴛᴀᴋᴇɴ ʙʏ ᴛʜᴇ ʙᴏᴅʏ ᴛᴏ ꜱᴛᴏᴘ ɪꜱ:
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Explanation:
vaccine activates our immune system without making us sick. Many dangerous infectious diseases can be prevented in this simple and effective way. A vaccine activates our immune system without making us sick.
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