CD9

en

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CD9

Quality:

CD9 molecule - mammalian protein found in Homo sapiens. Article “CD9” in English Wikipedia has 66 points for quality (as of July 1, 2026). The article contains 63 references and 6 sections.

This article has the best quality in Catalan Wikipedia. However, this article is the most popular in English version.

Since the creation of article “CD9”, its content was written by 33 registered users of English Wikipedia and edited by 88 registered Wikipedia users in all languages.

The article is cited 434 times in English Wikipedia and cited 1243 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #86218 in January 2016
  • Global: #32123 in May 2014

The highest popularity rank from 2008:

  • Local (English): #297220 in October 2015
  • Global: #461296 in October 2015

There are 9 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1Catalan (ca)
CD9 (proteïna)
95.3846
2English (en)
CD9
65.9606
3Chinese (zh)
CD9
43.7009
4German (de)
CD9
25.3461
5Ukrainian (uk)
CD9
21.8766
6Italian (it)
CD9
20.3121
7Galician (gl)
CD9
19.1859
8Russian (ru)
CD9
17.6509
9Spanish (es)
CD9 (inmunología)
7.48
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "CD9" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
CD9
272 313
2Spanish (es)
CD9 (inmunología)
15 214
3Italian (it)
CD9
11 654
4Russian (ru)
CD9
8 827
5German (de)
CD9
6 755
6Chinese (zh)
CD9
2 971
7Galician (gl)
CD9
1 764
8Ukrainian (uk)
CD9
330
9Catalan (ca)
CD9 (proteïna)
313
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2026

The most popular language versions of the article "CD9" in June 2026
#LanguagePopularity awardRelative popularity
1English (en)
CD9
428
2Chinese (zh)
CD9
177
3German (de)
CD9
35
4Spanish (es)
CD9 (inmunología)
27
5Russian (ru)
CD9
13
6Italian (it)
CD9
10
7Ukrainian (uk)
CD9
6
8Catalan (ca)
CD9 (proteïna)
0
9Galician (gl)
CD9
0
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "CD9" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
CD9
33
2Italian (it)
CD9
19
3Spanish (es)
CD9 (inmunología)
17
4Russian (ru)
CD9
6
5Catalan (ca)
CD9 (proteïna)
4
6German (de)
CD9
4
7Galician (gl)
CD9
3
8Chinese (zh)
CD9
2
9Ukrainian (uk)
CD9
0
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2026

Language versions of the article "CD9" with the highest AI in June 2026
#LanguageAI awardRelative AI
1Catalan (ca)
CD9 (proteïna)
0
2German (de)
CD9
0
3English (en)
CD9
0
4Spanish (es)
CD9 (inmunología)
0
5Galician (gl)
CD9
0
6Italian (it)
CD9
0
7Russian (ru)
CD9
0
8Ukrainian (uk)
CD9
0
9Chinese (zh)
CD9
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "CD9" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
CD9
434
2Russian (ru)
CD9
334
3Ukrainian (uk)
CD9
331
4Chinese (zh)
CD9
82
5Italian (it)
CD9
45
6German (de)
CD9
8
7Galician (gl)
CD9
5
8Spanish (es)
CD9 (inmunología)
4
9Catalan (ca)
CD9 (proteïna)
0
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2026:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2026:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
caCatalan
CD9 (proteïna)
deGerman
CD9
enEnglish
CD9
esSpanish
CD9 (inmunología)
glGalician
CD9
itItalian
CD9
ruRussian
CD9
ukUkrainian
CD9
zhChinese
CD9

Popularity rank trends

Best Rank English:
#297220
10.2015
Global:
#461296
10.2015

AI rank trends

Best Rank English:
#86218
01.2016
Global:
#32123
05.2014

Languages comparison

Important global interconnections (July 2025 – June 2026)

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

en: CD9
it: CD9
ru: CD9
de: CD9
zh: CD9
gl: CD9
uk: CD9

News from 1 July 2026

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information