27 phenotypes from 2 alleles in 4 genetic backgrounds

Allelic Composition Genetic Background	Annotated Term	Reference
C4bem1(IMPC)H/C4bem1(IMPC)H C57BL/6NTac-C4bem1(IMPC)H/H	decreased lean body mass	J:211773
	increased freezing behavior	J:211773
C4btm1Crr/C4btm1Crr involves: 129S4/SvJae	abnormal blood coagulation	J:44715
	decreased susceptibility to Coronaviridae infection	J:286325
	glomerulonephritis	J:44715
C4btm1Crr/C4btm1Crr involves: 129S4/SvJae * C57BL/6	abnormal humoral immune response	J:64282
	abnormal intestine morphology	J:78613
	abnormal spleen germinal center morphology	J:64282
	decreased spleen germinal center number	J:64282
	decreased spleen germinal center size	J:64282
	decreased susceptibility to bacterial infection	J:30152
	decreased vascular permeability	J:78613
	normal homeostasis/metabolism phenotype	J:120567
	normal immune system phenotype	J:30152, J:64282
	increased susceptibility to bacterial infection induced morbidity/mortality	J:30152
	increased susceptibility to induced morbidity/mortality	J:44240
	liver inflammation	J:30152
C4btm1Crr/C4btm1Crr involves: 129S4/SvJae * C57BL/6J	abnormal immune system physiology	J:111811
	abnormal renal glomerulus morphology	J:111811
	glomerulonephritis	J:111811
	increased anti-double stranded DNA antibody level	J:111811
	increased anti-nuclear antigen antibody level	J:111811
	increased anti-single stranded DNA antibody level	J:111811
	increased macrophage cell number	J:111811
	increased neutrophil cell number	J:111811
	increased spleen germinal center number	J:111811
	increased spleen weight	J:111811
	renal glomerular protein deposits	J:111811