Table 1 Overview about the investigated SARS-CoV-2 isolates and their morphometric characteristics determined in section profiles of virus particles (median of distribution and interquartile range in brackets).

From: Electron microscopy images and morphometric data of SARS-CoV-2 variants in ultrathin plastic sections

Data set #

Virus isolate

max. profile diameter [nm]

profile circumference [nm]

spikes per virus 2D section profile

spike density per 100 nm circumference

1

SARS-CoV-2 Munich929

95 (10)

285 (27)

9 (6)

2.8

2

SARS-CoV-2 Italy-INMI1

95 (4)

290 (15)

9 (5)

3.2

3

SARS-CoV-2 Alpha (B.1.1.7)

93 (6)

284 (14)

10 (4)

3.5

4

SARS-CoV-2 Beta (B.1.351)

99 (6)

302 (17)

8 (5)

2.6

5

SARS-CoV-2 Delta (B.1.617.2)

92 (6)

281 (17)

10 (4)

3.6

6

SARS-CoV-2 Omicron (B.1.1.529)

93 (5)

280 (15)

10 (5)

3.5