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Table 1 Information on the virus strains used in the study

From: Preferential use of Siglec-1 or Siglec-10 by type 1 and type 2 PRRSV strains to infect PK15S1–CD163 and PK15S10–CD163 cells

Strain Year of isolation Origin Passages in MARC-145/PAM Virulence score Macrophage (mø) tropism Genotype Accession number References
LV 1991 Netherlands 13 in PAM 1+ Sn+ G1s1 M96262 [28]
94V360 1994 Belgium 3 in PAM NA NA G1s1 JF304781 [31]
07V063 2007 Belgium 3 in PAM 3+ Sn+ and Sn G1s1 GU737264 [16]
08VA 2008 Belgium 4 in PAM 0 Sn+ and Sn G1s1 GU737266 [16]
13V091 2013 Belgium 4 in PAM 4+ Sn+ and Sn G1s1 KT159248 [16]
13V117 2013 Belgium 3 in PAM 0 Sn+ and Sn G1s1 KT159249 [16]
17V035 2017 Belgium 2 in PAM 0 NA G1s1 This study NA
Lena 2007 Belarus 4 in PAM 6+ Sn+ and Sn G1s3 JF802085 [32]
SU1-Bel 2010 Belarus 4 in PAM 5+ NA G1s3 KP889243 [33]
VR2332 1990 USA 4 in MARC-145 and 2 in PAM 2+ Sn+ and Sn G2 U87392 [34]
SDSU-73 1995 USA 3 in MARC-145 and 3 in PAM 4+ NA G2 JN654458 [28]
MN-184 2001 USA 3 in MARC-145 and 3 in PAM 5+ Sn+ and Sn G2 EF488739 [28]
NADC-30 2008 USA 3 in MARC-145 and 3 in PAM 3+ NA G2 JN654459 [28]
Korean 17 2017 Korean 3 in PAM NA NA G2 This study NA
  1. NA: not available; S1: PK-15S1–CD163; S10: PK-15S10–CD163; G1s1: type1 subtype 1; G1s3: type1 subtype 3; G2: type 2