Rat	Treatment	antibody_level
1	placebo	58.53
2	placebo	68.02
3	placebo	63
4	placebo	53.19
5	placebo	51.52
6	placebo	57.55
7	placebo	62.01
8	placebo	63.98
9	placebo	56.52
10	placebo	55.98
11	drug_X	49.05
12	drug_X	62
13	drug_X	54.35
14	drug_X	44.37
15	drug_X	64.73
16	drug_X	55.31
17	drug_X	62.72
18	drug_X	54.69
19	drug_X	41.44
20	drug_X	46.81
21	drug_Y	41.82
22	drug_Y	36.27
23	drug_Y	45.1
24	drug_Y	37
25	drug_Y	44.75
26	drug_Y	43.1
27	drug_Y	49.28
28	drug_Y	46.58
29	drug_Y	37.06
30	drug_Y	46.59

p-value for normality?

p-value HOV?

Does this data violate the GLM assumption?

What statistical test run if do not transform data?