a | Total microglia | compared with P5 | *t*_{(6)} = 4.534 | *t*_{(6)} = 4.534
*d* = 3.70 | *t*_{(6)} = 1.277 | *t*_{(6)} = 1.782 | *t*_{(6)} = 4.534
*d* = 3.70 | *t*_{(6)} = 4.534
*d* = 3.70 |

b | Amoeboid microglia | compared with P5 | *t*_{(6)} = 1.330 | *t*_{(6)} = 2.621
*d* = 2.14 | *t*_{(6)} = 3.845
*d* = 3.13 | *t*_{(6)} = 4.045
*d* = 3.30 | *t*_{(6)} = 4.043
*d* = 3.30 | *t*_{(6)} = 4.044
*d* = 3.30 |

c | Stout microglia | compared with P5 | *t*_{(6)} = 0.395 | *t*_{(6)} = 1.886 | *t*_{(6)} = 6.416
*d* = 5.23 | *t*_{(6)} = 7.634
*d* = 6.23 | *t*_{(6)} = 8.654
*d* = 7.06 | *t*_{(6)} = 8.373
*d* = 6.83 |

d | Microglia with thick processes | compared with P5 | *t*_{(6)} = 2.659
*d* = 2.17 | *t*_{(6)} = 7.858
*d* = 6.41 | *t*_{(6)} = 8.657
*d* = 7.06 | *t*_{(6)} = 5.344
*d* = 4.36 | *t*_{(6)} = 1.926 | *t*_{(6)} = 1.574 |

e | Microglia with thin processes | compared with P5 | *t*_{(6)} = 1.000 | *t*_{(6)} = 5.078
*d* = 4.14 | *t*_{(6)} = 3.352
*d* = 2.73 | *t*_{(6)} = 4.653
*d* = 3.79 | *t*_{(6)} = 25.466
*d* = 20.79 | *t*_{(6)} = 31.079
*d* = 25.37 |

f | Phagocytic cup | compared with P17 | P5
*t*_{(6)} = 29.336
*d* = 23.95 | P7
*t*_{(6)} = 26.068
*d* = 21.28 | P10
*t*_{(6)} = 24.687
*d* = 20.15 | P12
*t*_{(6)} = 20.255
*d* = 16.53 | P14
*t*_{(6)} = 11.571
*d* = 9.44 | P21
*t*_{(6)} = 15.762
*d* = 12.86 |

**Microglia and phagocytic cups in the ML and GL during postnatal development** |

g | Total microglia | compared with ML | GL
*t*_{(10)} = 3.356
*d* = 2.12 | GL
*t*_{(10)} = 2.640
*d* = 1.66 | GL
*t*_{(10)} = 3.160
*d* = 1.99 | GL
*t*_{(10)} = 7.438
*d* = 4.70 | | |

h | Amoeboid microglia | compared with ML | GL
*t*_{(10)} = 1.226 | GL
*t*_{(10)} = 0.049 | GL
*t*_{(10)} = 1.000 | GL
*t*_{(10)} = 0.139 | | |

i | Stou*t*microglia | compared with ML | GL
*t*_{(10)} = 5.209
*d* = 3.29 | GL
*t*_{(10)} = 1.192 | GL
*t*_{(10)} = 3.354
*d* = 2.12 | GL
*t*_{(10)} = 8.846
*d* = 5.59 | | |

j | Microglia with thick processes | compared with ML | GL
*t*_{(10)} = 1.703 | GL
*t*_{(10)} = 1.326 | GL
*t*_{(10)} = 0.601 | GL
*t*_{(10)} = 1.003 | | |

k | Microglia with thin processes | compared with ML | GL
*t*_{(10)} = 0.604 | GL
*t*_{(10)} = 0.116 | GL
*t*_{(10)} = 2.191
*d* = 1.38 | GL
*t*_{(10)} = 6.186
*d* = 3.91 | | |

l | Phagocytic cup | compared with ML | GL
*t*_{(10)} = 4.013
*d* = 2.53 | GL
*t*_{(10)} = 2.400
*d* = 1.51 | GL
*t*_{(10)} = 6.814
*d* = 4.30 | GL
*t*_{(10)} = 2.279
*d* = 1.44 | | |

**Microglial phagocytic activity during the third postnatal week of development** |

| | | P15 | P16 | P18 | P19 | | |

m | Phagocytic cup | compared with GL P17 | GL
*t*_{(10)} = 3.978
*d* = 2.51 | GL
*t*_{(10)} = 2.198
*d* = 1.39 | GL
*t*_{(10)} = 0.568 | GL
*t*_{(10)} = 0.518 | | |

m | Phagocytic cup | compared with ML P17 | ML
*t*_{(10)} = 1.499 | ML
*t*_{(10)} = 0.029 | ML
*t*_{(10)} = 1.300 | ML
*t*_{(10)} = 2.313
*d* = 1.46 | | |

| | | P15 | P16 | P17 | P18 | P19 | |

m | Phagocytic cup | compared with the ML | GL
*t*_{(10)} = 0.757 | GL
*t*_{(10)} = 3.052
*d* = 1.93 | GL
*t*_{(10)} = 4.091
*d* = 2.58 | GL
*t*_{(10)} = 7.765
*d* = 4.91 | GL
*t*_{(10)} = 3.348
*d* = 2.11 | |

**Phagocytic cup size during the third postnatal week of development** |

| | | P10 | P14 | P21 | | | |

n | Phagocytic cup | compared with P17 | *t*_{(10)} = 2.037
*d* = 1.28 | *t*_{(14)} = 5.262
*d* = 2.81 | *t*_{(14)} = 3.547
*d* = 1.73 | | | |

**Pyknotic bodies in the GL than the ML during postnatal development** |

| | | P5 | P14 | P17 | P21 | | |

p | Pyknotic bodies | compared with GL P7 | GL
*t*_{(8)} = 0.328 | GL
*t*_{(8)} = 34.179
*d* = 24.16 | GL
*t*_{(8)} = 25.394
*d* = 17.95 | GL
*t*_{(8)} = 39.642
*d* = 28.03 | | |

p | Pyknotic bodies | compared with ML P7 | ML
*t*_{(8)} = 1.401 | ML
*t*_{(8)} = 0.416 | ML
*t*_{(8)} = 0.729 | ML
*t*_{(8)} = 0.939 | | |

| | | P5 | P7 | P14 | P17 | P21 | |

p | Pyknotic bodies | compared with ML | GL
*t*_{(10)} = 7.163
*d* = 4.53 | GL
*t*_{(6)} = 19.461
*d* = 15.88 | GL
*t*_{(10)} = 1.628 | GL
*t*_{(10)} = 0.100 | GL
*t*_{(10)} = 1.392 | |

**Sex differences in microglia morphology on P17 cerebellum** |

| | | GL | ML | | | | |

q/u | Amoeboid microglia | compared with females | males
*t*_{(4)} = 0.000 | males
*t*_{(4)} = 1.000 | | | | |

r/v | Stout microglia | compared with females | males
*t*_{(4)} = 1.278 | males
*t*_{(4)} = 0.496 | | | | |

s/w | Microglia with thick processes | compared with females | males
*t*_{(4)} = 1.920 | males
*t*_{(4)} = 1.683 | | | | |

t/x | Microglia with thin processes | compared with females | males
*t*_{(4)} = 3.445 d = 3.445 | males
*t*_{(4)} = 1.858 | | | | |

y/z | Phagocytic cup | compared with females | males
*t*_{(4)} = 1.044 | males
*t*_{(4)} = 1.726 | | | | |

aa/bb | Total microglia | compared with females | males
*t*_{(4)} = 0.892 | males
*t*_{(4)} = 1.323 | | | | |