Ultrastructural localization of extracellular matrix proteins of the lymph node cortex: evidence supporting the reticular network as a pathway for lymphocyte migration

Table 3 Data-gold particles counted per area.

	Fibril Associated	FRC-Fiber Border	Total Within Fiber	FRC Cytoplasm	FRC Outer Membrane	Background	Background Plus FRC Cytoplasm	Total Grains Counted	Percent Within Fiber	Percent on FRC Outer Membrane	Percent Background ***
vWF	39	19	58	10	3	186	196	257	23	1	76
Collagen I	168	17	185	9	4	24	33	222	83	2	15
Collagen III	169	20	189	8	2	48	55	246	77	1	22
Collagen IV	449	144	592	5	36	51	56	684	87	5	8
Laminin	69	11	80	6	7	85	91	178	45	4	51
Tenascin	257	99	356	13	32	138	151	538	66	6	28
Fibronectin	275	84	359	4	34	37**	40	433	83	8	9

** 7 grains found on lymphocyte membrane in one fibronectin plate (See Figure 6.)
*** Immunogold granules found within the FRC (Figure 1, area 3) were added to the background tally (Figure 1, area 5) for determining the final statistics, since lack of significant FRC label implies merely background presence.

ISSN: 1471-2172