Question

What is meant by antigent ?
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Answer 1

Explanation:

An antigen is any substance that causes your immune system to produce antibodies against it. This means your immune system does not recognize the substance, and is trying to fight it off. An antigen may be a substance from the environment, such as chemicals, bacteria, viruses, or pollen.

Answer 2

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$\sim$ ᴀɴᴛɪɢᴇɴ :-

$\implies$ᴀɴ ᴀɴᴛɪɢᴇɴ ɪs ᴅᴇғɪɴᴇᴅ ᴀs ᴀ sᴜʙsᴛᴀɴᴄᴇ ᴛʜᴀᴛ ʙɪɴᴅs ᴛᴏ sᴘᴇᴄɪғɪᴄ ᴀɴᴛɪʙᴏᴅɪᴇs, ᴡʜɪᴄʜ ɪɴ ᴛʜᴇ ʜᴜᴍᴀɴ ʙᴏᴅʏ ᴀʀᴇ ᴜsᴇᴅ ᴛᴏ ғɪɴᴅ ᴀɴᴅ ɴᴇᴜᴛʀᴀʟɪᴢᴇ ᴀɴʏ ᴘᴏᴛᴇɴᴛɪᴀʟʟʏ ʜᴀʀᴍғᴜʟ ғᴏʀᴇɪɢɴ sᴜʙsᴛᴀɴᴄᴇs ɪɴ ᴛʜᴇ ʙʟᴏᴏᴅsᴛʀᴇᴀᴍ. ᴛʜᴇ sᴘᴇᴄɪғɪᴄ ʙɪɴᴅɪɴɢ ʙᴇᴛᴡᴇᴇɴ ᴀɴᴛɪɢᴇɴ ᴀɴᴅ ᴀɴᴛɪʙᴏᴅʏ ɪs sɪᴍɪʟᴀʀ ᴛᴏ ᴛʜᴀᴛ ᴏғ ᴛʜᴇ ʟᴏᴄᴋ-ᴀɴᴅ-ᴋᴇʏ ʙɪɴᴅɪɴɢ ᴍᴏᴅᴇʟ.

$<marquee \: behavior = alternate><font \: color=gold>- ɪᴛᴢsᴜɴɴᴜ❗$