write about the erythroblastosis disease? pleasel help me
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ᴇʀʏᴛʜʀᴏʙʟᴀsᴛᴏsɪs ғᴇᴛᴀʟɪs, ᴀʟsᴏ ᴄᴀʟʟᴇᴅ ʜᴇᴍᴏʟʏᴛɪᴄ ᴅɪsᴇᴀsᴇ ᴏғ ᴛʜᴇ ɴᴇᴡʙᴏʀɴ, ᴛʏᴘᴇ ᴏғ ᴀɴᴇᴍɪᴀ ɪɴ ᴡʜɪᴄʜ ᴛʜᴇ ʀᴇᴅ ʙʟᴏᴏᴅ ᴄᴇʟʟs (ᴇʀʏᴛʜʀᴏᴄʏᴛᴇs) ᴏғ ᴀ ғᴇᴛᴜs ᴀʀᴇ ᴅᴇsᴛʀᴏʏᴇᴅ ɪɴ ᴀ ᴍᴀᴛᴇʀɴᴀʟ ɪᴍᴍᴜɴᴇ ʀᴇᴀᴄᴛɪᴏɴ ʀᴇsᴜʟᴛɪɴɢ ғʀᴏᴍ ᴀ ʙʟᴏᴏᴅ ɢʀᴏᴜᴘ ɪɴᴄᴏᴍᴘᴀᴛɪʙɪʟɪᴛʏ ʙᴇᴛᴡᴇᴇɴ ᴛʜᴇ ғᴇᴛᴜs ᴀɴᴅ ɪᴛs ᴍᴏᴛʜᴇʀ. ᴛʜɪs ɪɴᴄᴏᴍᴘᴀᴛɪʙɪʟɪᴛʏ ᴀʀɪsᴇs ᴡʜᴇɴ ᴛʜᴇ ғᴇᴛᴜs ɪɴʜᴇʀɪᴛs ᴀ ᴄᴇʀᴛᴀɪɴ ʙʟᴏᴏᴅ ғᴀᴄᴛᴏʀ ғʀᴏᴍ ᴛʜᴇ ғᴀᴛʜᴇʀ ᴛʜᴀᴛ ɪs ᴀʙsᴇɴᴛ ɪɴ ᴛʜᴇ ᴍᴏᴛʜᴇʀ. sʏᴍᴘᴛᴏᴍs ᴏғ ᴇʀʏᴛʜʀᴏʙʟᴀsᴛᴏsɪs ғᴇᴛᴀʟɪs ʀᴀɴɢᴇ ғʀᴏᴍ ᴍɪʟᴅ ᴛᴏ sᴇᴠᴇʀᴇ; ᴅᴇᴀᴛʜ ᴏғ ᴛʜᴇ ғᴇᴛᴜs ᴏʀ ɴᴇᴡʙᴏʀɴ sᴏᴍᴇᴛɪᴍᴇs ʀᴇsᴜʟᴛs.
ᴛᴡᴏ ʙʟᴏᴏᴅ ɢʀᴏᴜᴘ sʏsᴛᴇᴍs, ʀʜ ᴀɴᴅ ᴀʙᴏ, ᴘʀɪᴍᴀʀɪʟʏ ᴀʀᴇ ᴀssᴏᴄɪᴀᴛᴇᴅ ᴡɪᴛʜ ᴇʀʏᴛʜʀᴏʙʟᴀsᴛᴏsɪs ғᴇᴛᴀʟɪs. ᴛʜᴇ ʀʜ sʏsᴛᴇᴍ ɪs ʀᴇsᴘᴏɴsɪʙʟᴇ ғᴏʀ ᴛʜᴇ ᴍᴏsᴛ sᴇᴠᴇʀᴇ ғᴏʀᴍ ᴏғ ᴛʜᴇ ᴅɪsᴇᴀsᴇ, ᴡʜɪᴄʜ ᴄᴀɴ ᴏᴄᴄᴜʀ ᴡʜᴇɴ ᴀɴ ʀʜ-ɴᴇɢᴀᴛɪᴠᴇ ᴡᴏᴍᴀɴ (ᴀ ᴡᴏᴍᴀɴ ᴡʜᴏsᴇ ʙʟᴏᴏᴅ ᴄᴇʟʟs ʟᴀᴄᴋ ᴛʜᴇ ʀʜ ғᴀᴄᴛᴏʀ) ᴄᴏɴᴄᴇɪᴠᴇs ᴀɴ ʀʜ-ᴘᴏsɪᴛɪᴠᴇ ғᴇᴛᴜs. sᴇɴsɪᴛɪᴢᴀᴛɪᴏɴ ᴏғ ᴛʜᴇ ᴍᴏᴛʜᴇʀ’s ɪᴍᴍᴜɴᴇ sʏsᴛᴇᴍ (ɪᴍᴍᴜɴɪᴢᴀᴛɪᴏɴ) ᴏᴄᴄᴜʀs ᴡʜᴇɴ ғᴇᴛᴀʟ ʀᴇᴅ ʙʟᴏᴏᴅ ᴄᴇʟʟs ᴛʜᴀᴛ ᴄᴀʀʀʏ ᴛʜᴇ ʀʜ ғᴀᴄᴛᴏʀ (ᴀɴ ᴀɴᴛɪɢᴇɴ ɪɴ ᴛʜɪs ᴄᴏɴᴛᴇxᴛ) ᴄʀᴏss ᴛʜᴇ ᴘʟᴀᴄᴇɴᴛᴀʟ ʙᴀʀʀɪᴇʀ ᴀɴᴅ ᴇɴᴛᴇʀ ᴛʜᴇ ᴍᴏᴛʜᴇʀ’s ʙʟᴏᴏᴅsᴛʀᴇᴀᴍ. ᴛʜᴇʏ sᴛɪᴍᴜʟᴀᴛᴇ ᴛʜᴇ ᴘʀᴏᴅᴜᴄᴛɪᴏɴ ᴏғ ᴀɴᴛɪʙᴏᴅɪᴇs, sᴏᴍᴇ ᴏғ ᴡʜɪᴄʜ ᴘᴀss ᴀᴄʀᴏss ᴛʜᴇ ᴘʟᴀᴄᴇɴᴛᴀ ɪɴᴛᴏ ғᴇᴛᴀʟ ᴄɪʀᴄᴜʟᴀᴛɪᴏɴ ᴀɴᴅ ʟʏsᴇ, ᴏʀ ʙʀᴇᴀᴋ ᴀᴘᴀʀᴛ, ᴛʜᴇ ʀᴇᴅ ʙʟᴏᴏᴅ ᴄᴇʟʟs ᴏғ ᴛʜᴇ ғᴇᴛᴜs (ʜᴇᴍᴏʟʏsɪs).
ɪᴛ ɪs ʀᴀʀᴇ ғᴏʀ ᴀ ᴍᴏᴛʜᴇʀ ᴛᴏ ʙᴇᴄᴏᴍᴇ sᴇɴsɪᴛɪᴢᴇᴅ ᴅᴜʀɪɴɢ ᴛʜᴇ ᴄᴏᴜʀsᴇ ᴏғ ʜᴇʀ ғɪʀsᴛ ʀʜ-ᴘᴏsɪᴛɪᴠᴇ ᴘʀᴇɢɴᴀɴᴄʏ ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ᴀᴍᴏᴜɴᴛ ᴏғ ғᴇᴛᴀʟ ʀʜ ᴀɴᴛɪɢᴇɴ ᴛʜᴀᴛ ᴇɴᴛᴇʀs ᴍᴀᴛᴇʀɴᴀʟ ᴄɪʀᴄᴜʟᴀᴛɪᴏɴ ɪs ɪɴsᴜғғɪᴄɪᴇɴᴛ ᴛᴏ ᴄᴀᴜsᴇ sᴇɴsɪᴛɪᴢᴀᴛɪᴏɴ; ᴜsᴜᴀʟʟʏ ᴏɴʟʏ ᴅᴜʀɪɴɢ ʟᴀʙᴏᴜʀ ᴡɪʟʟ ᴇxᴘᴏsᴜʀᴇ ʙᴇ sɪɢɴɪғɪᴄᴀɴᴛ. ʜᴏᴡᴇᴠᴇʀ, ʙᴇᴄᴀᴜsᴇ ʀʜ sᴇɴsɪᴛɪᴠɪᴛʏ ɪs ʟɪᴋᴇʟʏ ᴛᴏ ᴅᴇᴠᴇʟᴏᴘ ᴅᴜʀɪɴɢ ʟᴀʙᴏᴜʀ, ᴛʜᴇ ʀɪsᴋ ᴏғ ᴛʜᴇ ᴅɪsᴇᴀsᴇ ᴅᴇᴠᴇʟᴏᴘɪɴɢ ɪɴ sᴜʙsᴇϙᴜᴇɴᴛ ʀʜ-ᴘᴏsɪᴛɪᴠᴇ ᴘʀᴇɢɴᴀɴᴄɪᴇs ɪɴᴄʀᴇᴀsᴇs. ᴛʜᴇ ʀɪsᴋ ᴄᴀɴ ʙᴇ ʀᴇᴅᴜᴄᴇᴅ ɪғ ᴛʜᴇ ᴍᴏᴛʜᴇʀ ʀᴇᴄᴇɪᴠᴇs ɪɴᴊᴇᴄᴛɪᴏɴs ᴏғ ʀʜ ɪᴍᴍᴜɴᴏɢʟᴏʙᴜʟɪɴ, ᴡʜɪᴄʜ ᴅᴇsᴛʀᴏʏs ғᴇᴛᴀʟ ʀᴇᴅ ʙʟᴏᴏᴅ ᴄᴇʟʟs ɪɴ ʜᴇʀ ʙʟᴏᴏᴅsᴛʀᴇᴀᴍ, ᴅᴜʀɪɴɢ ʜᴇʀ ғɪʀsᴛ ᴘʀᴇɢɴᴀɴᴄʏ. ᴛʜᴇ ғᴇᴛᴜs ᴀʟsᴏ ɪs ᴘʀᴏᴛᴇᴄᴛᴇᴅ ғʀᴏᴍ ʀʜ ʜᴇᴍᴏʟʏᴛɪᴄ ᴅɪsᴇᴀsᴇ ɪғ ᴀɴ ᴀʙᴏ ʙʟᴏᴏᴅ ɢʀᴏᴜᴘ ɪɴᴄᴏᴍᴘᴀᴛɪʙɪʟɪᴛʏ ᴇxɪsᴛs ᴄᴏɴᴄᴜʀʀᴇɴᴛʟʏ; ᴘʀᴏᴛᴇᴄᴛɪᴏɴ ɪs ᴄᴏɴғᴇʀʀᴇᴅ ʙʏ ᴀʙᴏ ᴀɴᴛɪʙᴏᴅɪᴇs, ᴡʜɪᴄʜ ᴅᴇsᴛʀᴏʏ ғᴇᴛᴀʟ ʙʟᴏᴏᴅ ᴄᴇʟʟs ɪɴ ᴛʜᴇ ᴍᴀᴛᴇʀɴᴀʟ ᴄɪʀᴄᴜʟᴀᴛɪᴏɴ ʙᴇғᴏʀᴇ ᴛʜᴇ ᴍᴏᴛʜᴇʀ ᴅᴇᴠᴇʟᴏᴘs ʀʜ sᴇɴsɪᴛɪᴠɪᴛʏ. ғᴇᴛᴀʟ-ᴍᴀᴛᴇʀɴᴀʟ ɪɴᴄᴏᴍᴘᴀᴛɪʙɪʟɪᴛɪᴇs ᴡɪᴛʜɪɴ ᴛʜᴇ ᴀʙᴏ ʙʟᴏᴏᴅ ɢʀᴏᴜᴘ ᴀʟᴏɴᴇ ᴀʀᴇ ᴍᴏʀᴇ ᴄᴏᴍᴍᴏɴ ᴛʜᴀɴ ᴛʜᴏsᴇ ᴏғ ᴛʜᴇ ʀʜ ᴛʏᴘᴇ, ʙᴜᴛ ᴛʜᴇ ɪᴍᴍᴜɴᴇ ʀᴇᴀᴄᴛɪᴏɴ ɪs ᴜsᴜᴀʟʟʏ ᴍᴜᴄʜ ʟᴇss sᴇᴠᴇʀᴇ, ᴜɴʟᴇss ᴛʜᴇ ғᴇᴛᴜs ɪs ᴛʏᴘᴇ ᴀ ᴀɴᴅ ᴛʜᴇ ᴍᴏᴛʜᴇʀ ᴛʏᴘᴇ ᴏ.
ᴛʜᴇ sᴇᴠᴇʀɪᴛʏ ᴏғ ᴇʀʏᴛʜʀᴏʙʟᴀsᴛᴏsɪs ғᴇᴛᴀʟɪs ᴠᴀʀɪᴇs ᴅᴇᴘᴇɴᴅɪɴɢ ᴏɴ ᴛʜᴇ ᴅᴇɢʀᴇᴇ ᴏғ ʜᴇᴍᴏʟʏsɪs. sʏᴍᴘᴛᴏᴍs ɪɴᴄʟᴜᴅᴇ ᴀɴᴇᴍɪᴀ, ᴡɪᴛʜ ᴛʜᴇ ᴘʀᴇsᴇɴᴄᴇ ᴏғ ᴍᴀɴʏ ɪᴍᴍᴀᴛᴜʀᴇ ʀᴇᴅ ʙʟᴏᴏᴅ ᴄᴇʟʟs (ᴇʀʏᴛʜʀᴏʙʟᴀsᴛs) ɪɴ ᴛʜᴇ ᴄɪʀᴄᴜʟᴀᴛɪᴏɴ; ᴊᴀᴜɴᴅɪᴄᴇ, ʀᴇsᴜʟᴛɪɴɢ ғʀᴏᴍ ᴀ ʙᴜɪʟᴅᴜᴘ ᴏғ ʙɪʟɪʀᴜʙɪɴ (ᴀ ʙʀᴇᴀᴋᴅᴏᴡɴ ᴘʀᴏᴅᴜᴄᴛ ᴏғ ʜᴇᴍᴏɢʟᴏʙɪɴ ғʀᴏᴍ ʀᴇᴅ ʙʟᴏᴏᴅ ᴄᴇʟʟs); ᴀɴᴅ ᴀɴ ᴇɴʟᴀʀɢᴇᴅ ʟɪᴠᴇʀ ᴀɴᴅ sᴘʟᴇᴇɴ. ɪɴ ɪᴛs ᴍɪʟᴅᴇsᴛ ғᴏʀᴍ, ᴛʜᴇ ᴅɪsᴇᴀsᴇ ᴍᴀɴɪғᴇsᴛs ᴏɴʟʏ ᴀs sʟɪɢʜᴛ ᴀɴᴇᴍɪᴀ ᴡɪᴛʜ ɴᴏ ᴏᴛʜᴇʀ ᴄᴏᴍᴘʟɪᴄᴀᴛɪᴏɴs; ɪɴ ɪᴛs ᴍᴏsᴛ ᴇxᴛʀᴇᴍᴇ ғᴏʀᴍ, ᴛʜᴇ ғᴇᴛᴜs ᴅɪᴇs ɪɴ ᴜᴛᴇʀᴏ. ʜʏᴅʀᴏᴘs ғᴇᴛᴀʟɪs, ᴡʜɪᴄʜ ɪs ᴄʜᴀʀᴀᴄᴛᴇʀɪᴢᴇᴅ ʙʏ ᴇxᴛʀᴇᴍᴇ ᴇᴅᴇᴍᴀ (ᴀʙɴᴏʀᴍᴀʟ ᴀᴄᴄᴜᴍᴜʟᴀᴛɪᴏɴ ᴏғ sᴇʀᴏᴜs ғʟᴜɪᴅ) ᴀɴᴅ ᴄᴏɴɢᴇsᴛɪᴠᴇ ʜᴇᴀʀᴛ ғᴀɪʟᴜʀᴇ, ɪs ᴛʜᴇ ᴍᴏsᴛ sᴇᴠᴇʀᴇ ғᴏʀᴍ ᴏғ ᴛʜᴇ ᴅɪsᴇᴀsᴇ ɪɴ ɴᴇᴡʙᴏʀɴs. ᴜsᴜᴀʟʟʏ ᴛʜᴇ ɪɴғᴀɴᴛ ᴅɪᴇs, ᴜɴʟᴇss ᴀɴ ᴇxᴄʜᴀɴɢᴇ ᴛʀᴀɴsғᴜsɪᴏɴ ɪɴ ᴡʜɪᴄʜ ᴛʜᴇ ʀʜ-ᴘᴏsɪᴛɪᴠᴇ ʙʟᴏᴏᴅ ᴏғ ᴛʜᴇ ɪɴғᴀɴᴛ ɪs ʀᴇᴘʟᴀᴄᴇᴅ ʙʏ ʀʜ-ɴᴇɢᴀᴛɪᴠᴇ ʙʟᴏᴏᴅ ɪs sᴜᴄᴄᴇssғᴜʟ. ᴀ ᴄᴏᴍᴘʟɪᴄᴀᴛɪᴏɴ ᴏғ ᴇʀʏᴛʜʀᴏʙʟᴀsᴛᴏsɪs ғᴇᴛᴀʟɪs ɪs ᴋᴇʀɴɪᴄᴛᴇʀᴜs, ᴡʜɪᴄʜ ɪs ᴄᴀᴜsᴇᴅ ʙʏ ᴅᴇᴘᴏsɪᴛɪᴏɴ ᴏғ ʙɪʟɪʀᴜʙɪɴ ɪɴ ᴛʜᴇ ʙʀᴀɪɴ. ʜᴇᴀʀɪɴɢ ʟᴏss, ᴍᴇɴᴛᴀʟ ʀᴇᴛᴀʀᴅᴀᴛɪᴏɴ, ᴏʀ ᴅᴇᴀᴛʜ ᴍᴀʏ ʀᴇsᴜʟᴛ. ɴᴇᴠᴇʀᴛʜᴇʟᴇss, ᴍᴀɴʏ ᴘʀᴏᴄᴇᴅᴜʀᴇs ᴀʀᴇ ᴀᴠᴀɪʟᴀʙʟᴇ ᴛᴏ ᴀᴠᴇʀᴛ ᴛʜᴇsᴇ ᴄᴏɴsᴇϙᴜᴇɴᴄᴇs. ɪғ ɪᴛ ɪs ᴅᴇᴛᴇʀᴍɪɴᴇᴅ ᴛʜᴀᴛ ᴛʜᴇ ғᴇᴛᴜs ɪs ᴀᴛ ʀɪsᴋ ғᴏʀ ᴇʀʏᴛʜʀᴏʙʟᴀsᴛᴏsɪs ғᴇᴛᴀʟɪs, ᴀᴍɴɪᴏᴄᴇɴᴛᴇsɪs ᴄᴀɴ ʙᴇ ᴜsᴇᴅ ᴛᴏ ᴍᴇᴀsᴜʀᴇ ʙɪʟɪʀᴜʙɪɴ ᴄᴏɴᴄᴇɴᴛʀᴀᴛɪᴏɴs ᴀɴᴅ ᴘʀᴇᴅɪᴄᴛ ᴛʜᴇ sᴇᴠᴇʀɪᴛʏ ᴏғ ᴛʜᴇ ᴅɪsᴇᴀsᴇ. ɪғ ʟᴇᴠᴇʟs ᴀʀᴇ ᴇʟᴇᴠᴀᴛᴇᴅ, ɪɴᴛʀᴀᴜᴛᴇʀɪɴᴇ ᴛʀᴀɴsғᴜsɪᴏɴs ᴏғ ʀʜ-ɴᴇɢᴀᴛɪᴠᴇ ʙʟᴏᴏᴅ ᴄᴀɴ ʙᴇ ɢɪᴠᴇɴ ᴜɴᴛɪʟ ᴘʀᴇᴍᴀᴛᴜʀᴇ ᴅᴇʟɪᴠᴇʀʏ ᴄᴀɴ ʙᴇ ɪɴᴅᴜᴄᴇᴅ. ᴛʜᴇsᴇ ᴍᴇᴀsᴜʀᴇs, ᴛᴏɢᴇᴛʜᴇʀ ᴡɪᴛʜ ᴛʜᴇ ᴜsᴇ ᴏғ ʀʜ ɪᴍᴍᴜɴᴏɢʟᴏʙᴜʟɪɴ, ʜᴀᴠᴇ ᴀʟᴍᴏsᴛ ᴇʟɪᴍɪɴᴀᴛᴇᴅ ᴛʜᴇ ɪɴᴄɪᴅᴇɴᴄᴇ ᴏғ ᴇʀʏᴛʜʀᴏʙʟᴀsᴛᴏsɪs ғᴇᴛᴀʟɪs ɪɴ ᴅᴇᴠᴇʟᴏᴘᴇᴅ ᴄᴏᴜɴᴛʀɪᴇs.