Fix psuedo replicate calling.

workflow/scripts/pool_and_psuedoreplicate.py

@@ -189,12 +189,13 @@ def main():
         experiment_id = design_df.at[0, 'experiment_id']
         replicate = design_df.at[0, 'replicate']
         design_new_df = design_df.loc[np.repeat(design_df.index, 4)].reset_index()
+        design_new_df['replicate'] = design_new_df['replicate'].astype(str)
         design_new_df.at[1, 'sample_id'] = experiment_id + '_pr'
         design_new_df.at[1, 'replicate'] = '1_pr'
         design_new_df.at[2, 'sample_id'] = experiment_id + '_pr'
         design_new_df.at[2, 'replicate'] = '2_pr'
         design_new_df.at[3, 'sample_id'] = experiment_id + '_pr'
-        design_new_df.at[3, 'replicate'] = '2_pr'
+        design_new_df.at[3, 'replicate'] = 'pooled'
 
         # Make 2 self psuedoreplicates
         self_pseudoreplicates_dict = {}