Step 1

B Lymphocytes & TH2 Lymphocytes 1

Step 2

B Lymphocytes & TH2 Lymphocytes 2

Step 3

B Lymphocytes & TH2 Lymphocytes 3

Step 4

Bone Marrow & Hematopoeisis 1

Step 5

Bone Marrow & Hematopoeisis 2

Step 6

Complement System 1

Step 7

Complement System 2

Step 8

Complement System 3

Step 9

Cytokines 1

Step 10

Cytokines 2

Step 11

Cytokines 3

Step 12

Cytokines 4

Step 13

Immunoglobulins 1

Step 14

Immunoglobulins 2

Step 15

Immunoglobulins 3

Step 16

MHC Molecules 1

Step 17

MHC Molecules 2

Step 18

MHC Molecules 3

Step 19

MHC Molecules 4

Step 20

Thymus & T-Cell Development 1

Step 21

Thymus & T-Cell Development 2

Step 22

Type I Hypersensitivity Reaction 1

Step 23

Type I Hypersensitivity Reaction 2

Step 24

Type II Hypersensitivity Reaction

Step 25

Type III Hypersensitivity Reaction 1

Step 26

Type III Hypersensitivity Reaction 2

Step 27

Type IV Hypersensitivity Reaction 1