Table 1 Alveolar volume fraction (ϕ) in the live and the fixed lungs.

From: Spherical alveolar shapes in live mouse lungs

Cube No. in 3 live lungs

Vcube

Vairspace

ϕ

Cube No. in 3 fixed lungs

Vcube

Vairspace

ϕ

1

11,239,424

7,334,734

0.65

1

2,299,968

1,955,032

0.85

2

11,239,424

7,918,793

0.70

2

2,299,968

2,003,078

0.87

3

11,239,424

7,227,658

0.64

3

2,299,968

2,027,650

0.88

4

11,239,424

7,234,614

0.64

4

2,299,968

1,965,984

0.85

5

11,239,424

7,731,728

0.69

5

2,299,968

1,873,721

0.81

6

11,239,424

7,469,858

0.66

6

2,299,968

2,037,984

0.89

7

11,239,424

7,553,184

0.67

7

2,299,968

1,845,140

0.80

8

11,239,424

7,858,547

0.70

8

2,299,968

1,886,994

0.82

9

11,239,424

7,556,984

0.67

9

2,299,968

1,982,583

0.86

10

11,239,424

7,256,657

0.65

10

2,299,968

1,839,865

0.80

11

11,239,424

7,197,090

0.64

11

2,299,968

1,919,030

0.83

12

11,239,424

6,786,032

0.60

12

2,299,968

1,947,159

0.85

13

11,239,424

7,365,432

0.66

13

2,299,968

2,029,154

0.88

14

11,239,424

7,494,899

0.67

14

2,299,968

1,886,979

0.82

15

11,239,424

7,251,825

0.65

15

2,299,968

1,946,242

0.85

  1. Vcube: volume of the cubes in the lung (μm3) and Vairspace: volume of the airspace inside the cubes (μm3), ϕ: alveolar volume fraction of the cubes, defined as ϕ = Vairspace/Vcube and measured as ϕ = 0.66 ± 0.02 (mean ± s.d.) for the live lung and ϕ = 0.85 ± 0.03 (mean ± s.d.) for the fixed lung.
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