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Immune System - The Natural Killer Cell

Natural Killer Cells are a specific type of lymphocyte (white blood cell) and are the most aggressive component of the innate immune system. Learn how Natural Killer Cells function.
Stats
60 Scores
81% Average Score
1.9 Average Tries
Recent Users
Score
Time
Tries
Date
100%
00:26
2
Feb 21, 2012
100%
00:31
2
Feb 12, 2012
100%
00:40
2
Jan 9, 2012
86%
00:52
2
Dec 18, 2011
71%
00:55
3
Nov 27, 2011
100%
00:31
3
Nov 25, 2011
86%
00:52
2
Nov 10, 2011
57%
01:22
1
Oct 28, 2011
43%
01:53
1
Sep 28, 2011
86%
08:58
1
Sep 20, 2011
100%
00:36
3
Sep 20, 2011
71%
02:27
1
Aug 26, 2011
86%
05:06
1
Aug 24, 2011
86%
01:57
3
Aug 12, 2011
86%
06:18
2
Aug 6, 2011
57%
02:50
1
Aug 5, 2011
71%
04:16
1
Jul 16, 2011
100%
00:32
3
Jun 30, 2011
100%
00:33
3
Jun 15, 2011
57%
01:04
1
Jun 12, 2011
86%
02:47
1
May 24, 2011
71%
02:22
1
May 15, 2011
100%
00:23
2
May 14, 2011
71%
02:53
1
Mar 22, 2011
57%
03:00
1
Mar 16, 2011
86%
00:34
4
Mar 12, 2011
43%
08:48
1
Mar 11, 2011
100%
00:26
2
Mar 11, 2011
71%
05:22
1
Mar 10, 2011
29%
01:59
1
Mar 10, 2011
71%
01:48
1
Mar 10, 2011
100%
00:31
3
Mar 9, 2011
100%
01:05
3
Mar 8, 2011
29%
07:18
1
Mar 7, 2011
29%
02:09
1
Mar 7, 2011
100%
02:04
2
Mar 7, 2011
86%
00:37
2
Mar 6, 2011
71%
04:03
1
Mar 5, 2011
86%
01:09
2
Mar 5, 2011
86%
00:40
4
Mar 2, 2011
86%
00:31
2
Mar 2, 2011
100%
00:23
4
Mar 2, 2011
86%
06:11
1
Feb 28, 2011
100%
00:43
2
Feb 28, 2011
57%
10:19
1
Feb 27, 2011
86%
01:13
3
Feb 26, 2011
86%
00:39
2
Feb 26, 2011
100%
00:33
2
Feb 24, 2011
100%
01:04
2
Feb 24, 2011
86%
00:36
3
Feb 24, 2011
100%
00:28
1
Feb 23, 2011
86%
00:45
3
Feb 23, 2011
100%
00:32
2
Feb 23, 2011
100%
00:31
1
Feb 22, 2011
100%
00:52
4
Feb 21, 2011
86%
00:33
3
Feb 21, 2011
86%
00:34
2
Feb 20, 2011
57%
03:37
1
Feb 19, 2011
100%
00:34
2
Feb 19, 2011
43%
01:44
1
Feb 18, 2011
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