¤Þ¤¿¡¢Æ±ÍͤλîÎÁ¤ò¥µ¥ë¤ËÍ¿¤¨¤¿¾ì¹ç¤Ë¤â¡¢ÇÜ¿ôÀºÙ˦½Ð¸½Î¨¤Ï¡¢Èó¾È¼Í·²¤¬0.4%¡¢¾È¼Í¸åÃù¢¤·¤¿¾®Çþ·²¤¬0.10%¡¢¾È¼Íľ¸å¤Î¾®Çþ·²¤¬0.58%¤È¤Ê¤ê¡¢¾È¼Íľ¸å¤Î¾®Çþ¤òÍ¿¤¨¤¿¥µ¥ë¤Î¤ß¹â¤¤Ãͤò¼¨¤·¤¿¡£¥Þ¥¦¥¹¤ä¥é¥Ã¥È¤òÍѤ¤¤¿¼Â¸³¤Ç¤âƱ¤¸¤è¤¦¤ÊÇÜ¿ôÀºÙ˦¤ÎÁý²Ã¤¬¾È¼Í¾®Çþ¤òÍ¿¤¨¤¿·²¤Çǧ¤á¤é¤ì¤¿¡£
¡¡¡¡¡¡ Unirradiated
wheatFreshly
irradiated
wheatStored
irradiated
wheat¦ÁInitial 0 0 0 2weeks 0 ¡¡¡¡ 0(0.4) 0 4weeks 0 ¡¡0.8(1.2) ¡¡¡¡ 0(0.6) 6weeks 0 ¡¡1.8(3.8) ¡¡0.6(0.8) ¡¡Figures in parentheses indicate the percent of total abnormal cells, including polyploid cells.100 consecutive cells from each child were examined at each time interval.Five children were studied in each group. ¦ÁWheat was stored for 12 weeks after irradiation prior to being fed.
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Diet fed
in wk 1-5
GroupWheat flour
(%)in diet
fed in
wk 6-11
Mean frequency
of polyploid
cells(%)Stock
Low-proteinµ
¶
·
¸
¹
º
»
¼
½
¾
70*
100¢÷
¡¡90 ¡¡
90¢÷
¡¡75¡¡
75¢÷
-¢ø
-¢ø
¡¡90 ¡¡
90¢÷
0.217¡Þ0.017
0.231¡Þ0.027
0.202¡Þ0.029
0.305¡Þ0.037
0.194¡Þ0.032
0.220¡Þ0.053
0.274¡Þ0.048
0.178¡Þ0.027
0.227¡Þ0.043
0.216¡Þ0.025
* Stock diet ¢÷Wheat irradiated at 75 krad 2 wk before use. ¢øKilled at end of wk 5. Values are means ¡Þ SEM for groups of six rats;there were ¡¡no significant differences(P>0.05)between any of the groups.
Ãæ¹ñ¤Ë¤ª¤¤¤Æ¡¢¥Ü¥é¥ó¥Æ¥£¥¢¤Î³ØÀ¸¤é78¿Í¤Ë35¼ï¤Î¾È¼Í¿©Éʤò90Æü´Ö¿©¤Ù¤µ¤»¤Æ¤½¤Î±Æ¶Á¤¬Ä´¤Ù¤é¤ì¤¿¡£ÊÆ¡¢¾®Çþ¡¢ÂçƦ¡¢¾®Æ¦¡¢¥Ô¡¼¥Ê¥Ã¥Ä¡¢ÆùÀ½ÉÊ¡¢ÇÏÎë½ò¡¢ÌîºÚ¡¢¤¤Î¤³¡¢²Ì¼Â¤Ê¤É¤ò0.1¡Á0.8kGy¾È¼Í¤·¤¿¸å¤ËÄ´Íý¤·¡¢³ØÀ¸Ã£¤Ë¶¡»î¤·¤¿¡£Á´¿©ÉʤËÀê¤á¤ë¾È¼Í¿©Éʤγä¹ç¤Ï60.3%¤Ç¤¢¤Ã¤¿¡£·ì±Õ¸¡ºº¡¢Ç¢¸¡ºº¡¢·ì±ÕÀ¸²½³Ø¸¡ºº¡¢´Îµ¡Ç½¸¡ºº¡¢¿Õµ¡Ç½¸¡ºº¡¢ÆâʬÈ縡ºº¡¢Ìȱָ¡ºº¡¢ÆÍÁ³ÊÑ°Û»Øɸ¸¡ººÅù¤¬¹Ô¤ï¤ì¡¢¤½¤Î·ë²Ì¡¢¾È¼Í¿©Éʤò¿©¤Ù¤ë¤³¤È¤Ë¤è¤ë¾åµ¤Î¸¡ºº¹àÌܤؤΰ±Æ¶Á¤Ï²¿¤â´Ñ»¡¤µ¤ì¤Ê¤«¤Ã¤¿¡£¤³¤Î»î¸³¤Ë¤ª¤¤¤Æ¤Ï¡¢¾È¼Í¿©ÉÊÀݼè¤Ëȼ¤¦À÷¿§ÂΤÎÇÜ¿ôÀºÙ˦¤ÎÁý²Ã¤Ï´Ñ»¡¤µ¤ì¤Ê¤«¤Ã¤¿¡£
Radiation(kGy) Feeding period
(hrs)No.of animals No.of cells
analysedNo.of cells
with micronuclei% Unirradiated
7.5 (in N2 gas)
15 (in N2 gas)
30 (in N2 gas)
7.5 (in air)
15 (in air)
30 (in air)
48
72
48
72
48
72
48
72
48
72
48
72
48
72
6
-
6
-
6
-
6
-
6
-
6
-
6
-
6000
6000
6000
6000
6000
6000
6000
6000
6000
6000
6000
6000
6000
6000
8
21
14
15
13
10
15
15
10
14
19
12
12
15
0.13
0.35
0.23
0.25
0.22
0.17
0.25
0.25
0.17
0.23
0.32
0.20
0.20
0.25