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jmdict 2867105 Active (id: 2347206)
血紅素
けっこうそ
1. [n] [rare] {biochemistry}
▶ hemoglobin
▶ haemoglobin
Cross references:
  ⇒ see: 1118700 ヘモグロビン 1. hemoglobin; haemoglobin



History:
4. A 2025-08-29 10:57:56  Jim Breen <...address hidden...>
  Comments:
OK
3. A* 2025-08-28 09:44:30  Sombrero1
  Refs:
Daijirin: ヘモグロビン
Nikkoku: 「けっしきそ(血色素)」に同じ。(Hemoglobin)

Google N-gram Corpus Counts
╭─ーーーーーー─┬─────────┬───────╮
│ 血紅素    │       0 │  0.0% │
│ ヘモグロビン │ 116.622 │100.0% │
╰─ーーーーーー─┴─────────┴───────╯
  Comments:
Hematin and hemoglobin are not the same, the former is a derivate of the latter and typically only found in pathological circumstances.
I think GG5 is wrong here, it's 3:1 on hemoglobin.

I can't find much currency for this anyway, most search results are chinese, japanese ones are dictionary sites.
Though the chinese ones also have "hemoglobin" not "hematin".
  Diff:
@@ -11,0 +12 @@
+<xref type="see" seq="1118700">ヘモグロビン</xref>
@@ -12,0 +14,2 @@
+<misc>&rare;</misc>
+<gloss>hemoglobin</gloss>
@@ -14,2 +16,0 @@
-<gloss>hematin</gloss>
-<gloss>haematin</gloss>
2. A 2025-08-28 00:23:39  Jim Breen <...address hidden...>
  Refs:
GG5, etc.
  Diff:
@@ -11,0 +12 @@
+<field>&biochem;</field>
@@ -12,0 +14,2 @@
+<gloss>hematin</gloss>
+<gloss>haematin</gloss>
1. A* 2025-08-27 13:09:16 
  Refs:
NEW斎藤和英大辞典

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