Table 3.
Number of neurons in the different layers of the seven subdivisions of the rhesus monkey entorhinal cortex at four postnatal ages.
| Newborn | 6-month | 1-year | 5–9-year | ||
|---|---|---|---|---|---|
| Eo | II | 56,998 ± 14,616 | 50,324 ± 11,012 | 43,573 ± 5,552 | 40,137 ± 7,108 |
| III | 257,538 ± 53,436 | 232,567 ± 89,534 | 239,802 ± 27,701 | 296,929 ± 41,347 | |
| V–VI | 80,202 ± 18,971 | 91,625 ± 25,452 | 73,022 ± 13,160 | 65,969 ± 8,391 | |
| Eo total | 394,738 ± 77,104 | 374,516 ± 121,978 | 356,397 ± 31,283 | 403,035 ± 53,910 | |
| Er | II | 49,249 ± 14,977 | 52,994 ± 15,035 | 45,477 ± 8,665 | 50,417 ± 12,078 |
| III | 204,289 ± 55,036 | 184,467 ± 64,923 | 188,370 ± 53,426 | 281,868 ± 48,238 | |
| V | 38,259 ± 5,119 | 34,440 ± 12,002 | 28,994 ± 5,753 | 44,363 ± 8,241 | |
| VI | 106,700 ± 15,266 | 110,311 ± 23,743 | 80,800 ± 4,209 | 129,493 ± 19,533 | |
| Er total | 398,497 ± 83,570 | 382,212 ± 112,320 | 343,640 ± 68,250 | 506,140 ± 67,352 | |
| Elr | II | 32,624 ± 10,586 | 38,208 ± 10,263 | 28,238 ± 4,328 | 37,057 ± 6,695 |
| III | 76,867 ± 22,362 | 71,202 ± 26,083 | 67,970 ± 17,254 | 81,430 ± 8,653 | |
| V | 29,578 ± 7,710 | 30,873 ± 3,640 | 23,189 ± 4,720 | 28,949 ± 3,068 | |
| VI | 70,389 ± 15,478 | 67,671 ± 17,161 | 54,096 ± 5,807 | 65,686 ± 3,530 | |
| Elr total | 209,458 ± 53,106 | 207,953 ± 54,114 | 173,493 ± 20,000 | 213,123 ± 8,081 | |
| Ei | II | 118,911 ± 19,579 | 130,430 ± 35,204 | 132,187 ± 33,624 | 138,243 ± 16,063 |
| III | 388,879 ± 80,299 | 372,587 ± 51,551 | 374,793 ± 50,847 | 445,652 ± 68,989 | |
| V | 144,602 ± 25,470 | 148,560 ± 28,146 | 104,660 ± 16,160 | 159,237 ± 20,188 | |
| VI | 304,638 ± 52,134 | 365,010 ± 62,717 | 299,666 ± 73,535 | 328,132 ± 46,213 | |
| Ei total | 957,030 ± 161,627 | 1,016,588 ± 130,008 | 911,307 ± 151,217 | 1,071,264 ± 40,889 | |
| Elc | II | 26,624 ± 6,395 | 33,693 ± 6,713 | 31,826 ± 5,448 | 38,090 ± 593 |
| III | 70,589 ± 16,528 | 70,656 ± 18,621 | 67,518 ± 14,302 | 83,439 ± 12,414 | |
| V | 31,755 ± 7,888 | 36,877 ± 12,105 | 28,892 ± 6,343 | 34,604 ± 3,957 | |
| VI | 58,726 ± 9,809 | 85,161 ± 18,097 | 70,343 ± 16,279 | 62,761 ± 7,761 | |
| Elc total | 187,693 ± 38,740 | 226,386 ± 55,094 | 198,579 ± 37,058 | 218,894 ± 22,439 | |
| Ec | II | 60,233 ± 21,859 | 71,250 ± 21,323 | 75,749 ± 20,533 | 85,037 ± 13,609 |
| III | 222,020 ± 66,534 | 214,185 ± 33,337 | 205,258 ± 54,579 | 220,281 ± 29,678 | |
| V | 80,412 ± 19,808 | 92,638 ± 20,257 | 75,549 ± 17,689 | 88,204 ± 12,656 | |
| VI | 174,345 ± 50,666 | 224,050 ± 47,307 | 202,147 ± 71,812 | 185,487 ± 27,211 | |
| Ec total | 537,009 ± 153,077 | 602,124 ± 119,346 | 558,703 ± 151,587 | 579,009 ± 79,525 | |
| Ecl | II | 100,238 ± 22,369 | 99,552 ± 14,937 | 93,000 ± 14,356 | 110,802 ± 17,631 |
| III | 260,972 ± 44,181 | 222,921 ± 37,762 | 232,836 ± 42,565 | 211,414 ± 26,276 | |
| V | 73,980 ± 12,523 | 55,641 ± 2,095 | 56,303 ± 12,150 | 70,664 ± 8,806 | |
| VI | 173,389 ± 33,778 | 133,312 ± 25,297 | 145,144 ± 22,267 | 148,066 ± 18,292 | |
| Ecl total | 608,579 ± 89,027 | 511,427 ± 74,813 | 527,283 ± 70,726 | 540,946 ± 67,937 | |
| Entire EC | 3,293,005 ± 566,029 | 3,321,205 ± 533,323 | 3,069,402 ± 223,207 | 3,532,411 ± 252,997 |