Read the finding
Non-clinical sciences · Pattern recognition
Which immunoglobulin class does this describe
5 findings. Cover the answers and work down the list — then flip it and predict the finding from the diagnosis.
Pentameric, first in the primary response, fixes complement, cannot cross the placentaIgM
Most abundant; the only class that crosses the placenta; signals immunity/memoryIgG
Secretory dimer dominant at mucosal surfaces and in breast milk; commonest primary deficiencyIgA
Coats mast cells; mediates type I allergy and anti-helminth responses; lowest serum levelIgE
Antigen receptor on naive B-cell surfaces; minimal serum roleIgD