Table 1.

Reactivity of novel anti-RBD mAbs with S proteins in ELISA^a

mAb	Isotype	Antigen
		RBD-FC	S1-Fc	EC-S	FL-S
S6	IgG1/k	2.89	1.18	2.06	2.53
S9	IgG1/k	2.25	1.33	2.07	2.28
S20	IgG1/k	2.92	2.23	2.49	2.58
S25	IgG1/k	2.82	1.97	2.27	2.46
S29	IgG2b/k	2.50	0.87	0.40	1.62
S33	IgG2b/k	2.55	0.87	0.58	1.81
S37	IgG1/k	2.84	1.28	2.19	2.40
S38	IgG1/k	2.60	2.12	2.48	2.44
S40	IgG1/k	2.85	1.97	2.59	2.62
S44	IgG1/k	2.85	2.63	2.42	2.50
S50	IgG1/k	2.85	1.48	2.13	2.55
S53	IgG2b/k	2.39	1.20	1.48	2.08
102D7b	IgG1/k	0.01	0.01	2.00	2.75

^aAntigens were coated to ELISA plates at 0.5 μg/ml and mAbs were tested at 10 μg/ml. OD450 value >0.2 was considered positive reaction and highlighted in boldface.

^b102D7 is a control mAb targeting the S2 domain.