Table 1.

Lysososomal counts

Animal	No. PC	S, μm2 per PC	No. LY	LY I	LY II	LY (I + II)	LY lipo	MVB	No. LY/PC	No. LY per μm2
Wt 1	11	88	35	8	13	21	14	22	3.18	0.036
Wt 2	11	91	30	6	16	22	8	12	2.73	0.03
Wt 3	11	90	38	11	13	24	14	18	3.45	0.038
Wt 4	11	93	43	26	9	35	8	23	3.9	0.042
Wt 5	11	100	44	20	13	33	11	26	4	0.04
Total	55	92.4	190	71	64	135	55	101	3.45	0.037
Atm−/− 1	11	87	68	27	27	54	16	22	6.18	0.071
Atm−/− 2	11	96	79	39	24	63	16	37	7.18	0.075
Atm−/− 3	11	95	60	29	15	44	17	24	5.45	0.057
Atm−/− 4	11	93	62	26	17	43	19	10	5.64	0.061
Atm−/− 5	11	88	63	27	22	49	14	15	5.73	0.065
Total	55	91.8	332	148*	105	253*	82*	108	6.04**	0.066

S, surface area; LY, total lysosomes; LY I, primary lysosomes; LY II, secondary lysosomes; LY lipo, lipofuschin-containing lysosomes; MVB, multivesicular bodies; Wt, wild type. *, P < 0.01; **, P < 0.001.